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4990831e | 1 | $Cambridge: exim/doc/doc-misc/WishList,v 1.36 2005/06/06 08:37:17 ph10 Exp $ |
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2 | |
3 | EXIM 4 WISH LIST | |
4 | ---------------- | |
5 | ||
6 | Even when it was first released, Exim 4 had a Wish List because not all the | |
7 | things suggested for it were implemented. The list has not stopped growing... | |
8 | ||
9 | Another reason it is so long is that I have retained some items from the Exim 3 | |
10 | Wish List that never got implemented, but which seem reasonable possibilities | |
11 | for later addition to Exim 4. | |
12 | ||
13 | I have guessed at the amount of work involved, and categorized the items as | |
14 | Tiny, Small, Medium, Large, or Unknown. The guesses are not based on any | |
15 | detailed investigation, so must be taken as very rough. | |
16 | ||
17 | ||
18 | ------------------------------------------------------------------------------ | |
19 | ------------------------------------------------------------------------------ | |
20 | ----- Retained from the Exim 3 Wish List ------ | |
21 | ------------------------------------------------------------------------------ | |
22 | ------------------------------------------------------------------------------ | |
23 | ||
24 | (10) 13-Jul-98 M more flexibility for pipe returns | |
25 | Ben Smithurst | |
26 | ||
27 | The ability to specify more precisely what happens concerning the return code | |
28 | from the pipe and the presence/absence of STDOUT/STDERR is requested. The | |
29 | particular configuration that was requested was: | |
30 | ||
31 | > if the command exited EX_OK, *and* produced nothing on STDOUT or | |
32 | > STDERR, it succeeded... | |
33 | > if the command exited EX_TEMPFAIL, defer, regardless of | |
34 | > STDOUT/STDERR... | |
35 | > otherwise freeze the message (this will get my attention by way of | |
36 | > freeze_tell_mailmaster)... | |
37 | ------------------------------------------------------------------------------ | |
38 | ||
39 | (11) 17-Jul-98 G support for DSN | |
40 | Andy Mell | |
41 | ||
42 | It is unclear to me how this should work in the presence of aliases and | |
43 | forwarding. Local deliveries would have to explicitly configured as deliveries | |
44 | or relaying or whatever. A substantial amount of code is probably needed. | |
45 | ||
46 | Jeffrey Goldberg | |
47 | I have nothing to add except to say that for many of the reasons you've | |
48 | stated, I don't think that DSN is coherent enough to be worth the effort | |
49 | to implement. | |
50 | ||
51 | Another comment: | |
52 | ||
53 | I thought the RFC was pretty clear on this. In a nutshell, if the | |
54 | delivery rewrites the envelope from address, it's considered a | |
55 | terminal delivery (i.e. delivery to a mailing list exploder), otherwise | |
56 | treat it as a forwarding operation (the /etc/aliases case). I would | |
57 | treat a .forward expansion as a final delivery event (it got to the | |
58 | user as far as the MTA is concerned). | |
59 | ||
60 | Yes, we need the DSN syntax. We also require the complete semantics of | |
61 | NOTIFY=SUCCESS,FAILURE for our application to work. | |
62 | ||
63 | Electronic Bill Presentment is really going to push the need for | |
64 | DSN support in MTAs. We just don't want to get stuck in a situation | |
65 | where we're faced with a non-DSN-aware MTA when we go to install | |
66 | our bill/statement engine, thus our interest in what the MTA vendors | |
67 | are planning to do about DSN. | |
68 | ------------------------------------------------------------------------------ | |
69 | ||
70 | (41) 14-Oct-98 M Find a way of modifying header lines | |
71 | Oliver Smith | |
72 | ||
73 | The problem with header_remove followed by header_add is that you can't refer | |
74 | to the previous value of the header when adding a replacement. This could be | |
4990831e | 75 | solved with a replace_header option. See also Exim 4/333. |
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76 | ------------------------------------------------------------------------------ |
77 | ||
78 | (43) 15-Oct-98 M Sender rewrite *after* SMTP incoming checks | |
79 | Andreas Edler | |
80 | ||
81 | The anti-relaying check happens after the sender has been rewritten; there are | |
82 | times when it would be helpful to do the check on the original sender, not on | |
83 | the rewritten one. Quite how to configure this I'm not sure. | |
84 | ||
85 | A related suggestion (from Steve Sargent) is to retain the original sender | |
86 | address and make it accessible somehow. | |
87 | ------------------------------------------------------------------------------ | |
88 | ||
89 | (46) 20-Oct-98 L SMTP protocol hooks | |
90 | Malcolm Ray | |
91 | ||
92 | "But there are enough broken SMTP implementations to make me wonder whether | |
93 | there isn't a case for providing hooks for tweaking the SMTP transport's | |
94 | protocol exchange. Something which would allow me to say things like 'if, when | |
95 | talking to lame.example.com, you get a 251 response to a MAIL command, rewrite | |
96 | the response to 501 before continuing'." | |
97 | ------------------------------------------------------------------------------ | |
98 | ||
99 | (50) 13-Nov-98 M A "Focus" option for eximon | |
100 | Frank Elsner | |
101 | ||
102 | This is the opposite of "Hide"; it just displays a certain subset. Hmm. Could | |
103 | something clever be done with regular expressions? | |
104 | ------------------------------------------------------------------------------ | |
105 | ||
106 | (61) 22-Dec-98 M Send failed error messages to somebody | |
107 | Harald Meland | |
108 | ||
109 | With sendmail, the failed error message is made into a error message, | |
110 | with both envelope sender and recipient set to MAILER-DAEMON. The | |
111 | original, bogus-envelope-sender message is then available to whoever | |
112 | receives MAILER-DAEMON's mail. A more flexible approach would be to | |
113 | specify a specific recipient. | |
114 | ------------------------------------------------------------------------------ | |
115 | ||
116 | (81) 01-Mar-99 M Addition of Content-MD5 support | |
117 | Martin Hamilton | |
118 | ||
119 | Martin supplied a suggested patch at | |
120 | http://www.net.lut.ac.uk/~martin/antispam/exim-hacks/ | |
121 | ------------------------------------------------------------------------------ | |
122 | ||
123 | (85) 15-Mar-99 M ability to rewrite addresses in non-standard headers | |
124 | Dave Lewney | |
125 | John Holman | |
126 | ||
4990831e | 127 | Such as "return-receipt-to". See also 41. See also Exim 4/333. |
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128 | ------------------------------------------------------------------------------ |
129 | ||
130 | (90) 21-Apr-99 M change wild prefix/suffix greediness | |
131 | Ben Smithurst | |
132 | ||
133 | Currently, when prefix or suffix containing * is set on a director, and the | |
134 | fixed part occurs more than once in a local part, the length of the prefix or | |
135 | suffix is maximized. For example, with suffix = -* and a local part of | |
136 | foo-bar-baz the suffix is taken as bar-baz, leaving the local part as foo. | |
137 | An option is proposed to invert this rule. | |
138 | ------------------------------------------------------------------------------ | |
139 | ||
140 | (91) 26-Apr-99 S make queue_run_in_order to newest first | |
141 | "Andreas M. Kirchwitz" | |
142 | ||
143 | The tidiest thing would be to have queue_run_order={random,oldest,newest}, | |
144 | and make queue_run_in_order obsolete. | |
145 | ------------------------------------------------------------------------------ | |
146 | ||
147 | (93) 04-May-1999 L fallback_transport | |
148 | ||
149 | This would be a generic transport option, specifying a different transport to | |
150 | be used if the first one failed. Failed hard, or failed soft? Or an option? | |
151 | And if failed hard, is a bounce message sent as well, or not? There are uid | |
152 | issues. Remote delivery would have to be done always in a subprocess so that | |
153 | the main process could retain privilege in case the fallback transport was | |
154 | local. That could be conditional. That's why this is labelled "Large". Some of | |
155 | the things people want to do with this can be done by variations in the | |
156 | routers, e.g. use $message_age to switch routers. | |
157 | ------------------------------------------------------------------------------ | |
158 | ||
159 | (94) 13-May-1999 M message to go with -Mg | |
160 | Dave Holland | |
161 | Alan Thew | |
162 | ||
163 | So the admin can pass back a reason. | |
164 | ------------------------------------------------------------------------------ | |
165 | ||
166 | (99) 28-May-1999 M header to list failures for syntax_errors_to | |
167 | mark david mcCreary | |
168 | ||
169 | "I use the syntax_errors_to feature to email a copy of the error message. | |
170 | It would be helpful to have the X-Failed-Receipients header in there, | |
171 | identifying which addreses(s) are the problem, so that I don't have to | |
172 | parse the body of the email message to figure out which addresses." | |
173 | ------------------------------------------------------------------------------ | |
174 | ||
175 | (100) 04-Jun-1999 S admin_users option, like trusted_users | |
176 | Paul Mansfield | |
177 | ------------------------------------------------------------------------------ | |
178 | ||
179 | (102) 21-Jun-1999 M expanded basic variables | |
180 | Julian King | |
181 | ||
182 | Oh, and a wishlist entry, qualify_domain, and preferably other variables | |
183 | can be set with a $lookup in the first part of the exim configuration | |
184 | file, perhaps by an equivalent to backticks in shell script ("`command`")? | |
185 | ------------------------------------------------------------------------------ | |
186 | ||
187 | (105) 28-Jun-1999 M MIME-format bounce messages | |
188 | Paul Makepeace | |
189 | ||
190 | "Is there any work going/gone on/planned to enable exim to report delivery | |
191 | status notifications using RFC1892 multipart/report MIME messages? It would be | |
192 | great to have errors reported in a message/rfc822 attachment." | |
193 | ||
194 | Jeffrey Goldberg | |
195 | "I like plain bounces, so would hope that if you do this, that it be | |
196 | configurable. I think that even for those who want it, it shouldn't be very | |
197 | high on the wish list priority." | |
198 | ||
199 | Other suggestions: toggle for bounces/warnings; override max_return for | |
200 | certain addresses; use plain text if original not MIME. See Paul's hack | |
201 | for background of what to do. | |
202 | ||
203 | Nigel suggests using a specially named autoreply transport to generate bounces; | |
204 | people could then replace this with another transport (e.g. pipe) if they want | |
205 | to customize it themselves. | |
206 | ||
207 | Eli Chen posted an unconditional patch for 3.32 that does some of this work. | |
208 | That could form a basis. | |
209 | ------------------------------------------------------------------------------ | |
210 | ||
211 | (107) 12-Jul-1999 S defer transport at given load level | |
212 | Marc Haber | |
213 | ||
214 | ------------------------------------------------------------------------------ | |
215 | ||
216 | (108) 16-Jul-1999 S remote sort by numbers of recipients | |
217 | mark david mcCreary | |
218 | ||
219 | In the absence of remote_sort, sort remote domains by the number of recipients | |
220 | in each. | |
221 | ------------------------------------------------------------------------------ | |
222 | ||
223 | (114) 11-Nov-1999 S List of possible outgoing interfaces | |
224 | ||
225 | Allow the smtp "interface" option to be a list: try them in turn until one | |
226 | is found to work. Also allow masks to specify a range of addresses. | |
227 | ------------------------------------------------------------------------------ | |
228 | ||
229 | (123) 23-Dec-1999 L Use AUTH + TURN for dial-in hosts | |
230 | Andrew Tverdokhleb | |
231 | ||
232 | The way to do this would be to have Exim deliver messages into per-host | |
233 | directories in, say, BSMTP format. Accept TURN if authenticated, and cause it | |
234 | to run a helper program that is passed the socket in order to deliver the mail. | |
235 | Provide a helper program! | |
236 | ------------------------------------------------------------------------------ | |
237 | ||
238 | (125) 04-Jan-2000 L Use shared memory segment for queue list | |
239 | Theo Schlossnagle | |
240 | ||
241 | The idea is that a queue-runner that finds no existing shared segment should | |
242 | create one (if configured - possibly some fixed size) and all Exim processes | |
243 | should maintain a list of messages in it, thereby saving on directory scans | |
244 | when there are lots of messages. This needs a lot of careful thought to try to | |
245 | eliminate any possibility of data loss. The interlocking could be quite tricky. | |
246 | Further posters suggested using a db file to hold the list. See also 127. | |
247 | ------------------------------------------------------------------------------ | |
248 | ||
249 | (129) 14-Jan-2000 L Dynamically loadable lookup modules | |
250 | Steve Haslam | |
251 | ||
252 | Suggested patch provided. | |
253 | ------------------------------------------------------------------------------ | |
254 | ||
255 | (131) 17-Jan-2000 T Facility for assuming existence for EACCES | |
256 | Peter Radcliffe | |
257 | ||
258 | The opposite option for "+" in require_files: assume existence if cannot | |
259 | peer into the directory (+ assumes non-existence). | |
260 | ------------------------------------------------------------------------------ | |
261 | ||
262 | (131) 29-Feb-2000 M? Control total number of outgoing SMTP calls | |
263 | Brian White | |
264 | ||
265 | This is for hosts with slow connections. Could some modification of | |
266 | serialize_hosts be used for this? Or maybe use a semaphore? They seem to | |
267 | be quite widely available. | |
268 | ------------------------------------------------------------------------------ | |
269 | ||
270 | (132) 01-Mar-2000 S Lookup host name from outgoing interface | |
271 | Vadim Vygonets | |
272 | ||
273 | Instead of primary_hostname, look up the name for the interface that is being | |
274 | used for sending. Suggested patch supplied, but this should be an option of the | |
275 | smtp transport. | |
276 | ------------------------------------------------------------------------------ | |
277 | ||
278 | (133) 06-Mar-2000 S Filter option not to log "previously sent" | |
279 | Bruce Bowler | |
280 | ||
281 | This is when using the "log" option of the autoreply driver. | |
282 | ------------------------------------------------------------------------------ | |
283 | ||
284 | (134) 09-Mar-2000 S Option to remove attachments when bouncing | |
285 | ------------------------------------------------------------------------------ | |
286 | ||
287 | (136) 13-Mar-2000 S/M Option for aliasfile to suppress "me too" | |
288 | ||
289 | Could be tricky determining who "me" is. | |
290 | ------------------------------------------------------------------------------ | |
291 | ||
292 | (143) 08-May-2000 S Make quota_warn_threshold into a list | |
293 | David Carter | |
294 | ||
295 | So several warnings could be generated as the mailbox got bigger and bigger. | |
296 | ------------------------------------------------------------------------------ | |
297 | ||
298 | (146) 15-May-2000 M Allow SMTP error codes in retry rules | |
299 | ||
300 | This would allow special handling of certain errors from certain hosts. In | |
301 | particular, it would allow failing of certain 4xx codes. | |
302 | ||
303 | This is now available for 4xx responses to RCPT commands. Is anything more | |
75faf241 PH |
304 | needed? Apparently, yes; there's been a request for a similar feature for MAIL |
305 | commands. | |
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306 | ------------------------------------------------------------------------------ |
307 | ||
308 | (148) 15-May-2000 S Warn recipient if message rejected for quota excession. | |
309 | Heinz Ekker | |
310 | ||
311 | Maybe not all that small, because the possibility of retrying must be taken | |
312 | into account. | |
313 | ------------------------------------------------------------------------------ | |
314 | ||
315 | (149) 19-May-2000 L Make added headers visible in filters and other places | |
316 | Hans Morten Kind | |
317 | ||
318 | Headers added by directors/routers are not visible in subsequent processing. | |
319 | This is a request to make them visible. What about removed headers? This could | |
320 | be tricky to specify, hence the L. | |
321 | ||
322 | A separate but related issue is the effect of headers added by "unseen" | |
323 | directors. These are documented in chapter 19 as not being accumulated. Should | |
4990831e | 324 | any change be made? See also Exim 4/333. |
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325 | ------------------------------------------------------------------------------ |
326 | ||
327 | (155) 16-Jun-2000 M Special handling for certain hosts | |
328 | mark david mcCreary | |
329 | ||
330 | A means of changing the transport depending on the host name/IP of the most | |
331 | preferred MX record so that all domains that route to certain hosts can be | |
332 | handled specially. Maybe this could be a variable that is available in the | |
333 | expansion of the "transport" option. | |
334 | ------------------------------------------------------------------------------ | |
335 | ||
336 | (158) 29-Jun-2000 S Configure "From" in bounces | |
337 | Ben Parker | |
338 | ||
339 | Cf Reply-To. | |
340 | ------------------------------------------------------------------------------ | |
341 | ||
342 | (159) 07-Jul-2000 M Keep messages for fixed time | |
343 | Gary Palmer | |
344 | ||
345 | An option to keep messages on the queue for a specified time, even if all their | |
346 | destination hosts have timed out. | |
347 | ------------------------------------------------------------------------------ | |
348 | ||
349 | (164) 17-Aug-2000 S sender_unqualified_auth_hosts | |
350 | ||
351 | To allow authenticated hosts to send unqualified addresses. Presumably it | |
352 | needs received_... as well. | |
353 | ------------------------------------------------------------------------------ | |
354 | ||
355 | (167) 05-Sep-2000 L Support for ODBC | |
356 | ||
357 | This would allow access to databases that don't have native support built into | |
358 | Exim. See http://www.openlinksw.com/info/docs/rel3doc/unix/odbcsdk.htm | |
359 | ------------------------------------------------------------------------------ | |
360 | ||
361 | (168) 06-Sep-2000 M Deliver messages that alias to nothing to a given address | |
362 | Dr ZP Han | |
363 | ||
364 | If other people are managing alias lists, and one is empty, bounce that | |
365 | delivery to a given address rather than freezing the message. Use the errors_to | |
366 | address? | |
367 | ------------------------------------------------------------------------------ | |
368 | ||
369 | (172) 11-Sep-2000 S Allow file/directory in appendfile to override | |
370 | "Michael J. Tubby" | |
371 | ||
372 | When appendfile is called from forward or filter files, it ignores file or | |
373 | directory settings. Maybe they should override. The path set by the forward or | |
374 | filter is available in $address_file these days, so it could be used to create | |
375 | a longer path. | |
376 | ------------------------------------------------------------------------------ | |
377 | ||
378 | (173) 18-Sep-2000 S A way of doing lsearches with EOL terminated keys | |
379 | Jason Robertson | |
380 | ||
381 | This is for looking up things like subject contents. Probably need an option to | |
382 | exim_dbmbuild to make them into DBM files. | |
383 | ------------------------------------------------------------------------------ | |
384 | ||
385 | (174) 19-Sep-2000 S A way of using a different port for fallback hosts. | |
386 | Dean Brooks | |
387 | ------------------------------------------------------------------------------ | |
388 | ||
389 | (181) 10-Nov-2000 S Compile-time options for ignoring Sendmail options | |
390 | ||
391 | So that new ones could be accommodated easily. | |
392 | ------------------------------------------------------------------------------ | |
393 | ||
394 | (183) 04-Dec-2000 L dns_means_nonexist_after | |
395 | Dave C. | |
396 | ||
397 | In other words, wait a bit before giving up. This needs a mechanism for | |
398 | remembering, which is not currently available. To be borne in mind for the | |
399 | future. | |
400 | ------------------------------------------------------------------------------ | |
401 | ||
402 | (184) 04-Dec-2000 M Log more details of local caller | |
403 | J. Nick Koston | |
404 | ||
405 | "I was wondering if it was possible for exim to log the parent pid's cwd and | |
406 | exe when it is called from a script/invoked by actually running /usr/sbin/exim | |
407 | or /usr/sbin/sendmail." Question: is this information actually/easily | |
408 | available to Exim? Needs investigation. | |
409 | ------------------------------------------------------------------------------ | |
410 | ||
411 | (186) 19-Dec-2000 S A simple utility to reset a retry time | |
412 | Marc Haber | |
413 | ||
414 | Basically, to do what exim_fixdb "delete" can do, but straightforwardly. There | |
415 | could be an interface from eximon. | |
416 | ------------------------------------------------------------------------------ | |
417 | ||
418 | (187) 02-Jan-2001 M Wildcarding in headers_remove | |
419 | Tamas TEVESZ | |
420 | ||
421 | What I'd like to see is it to handle globs (or regexps, but i'm not sure this | |
422 | latter would worth the hassle), in a way like: | |
423 | ||
424 | headers_remove = "X-*:Additional-header" | |
425 | ------------------------------------------------------------------------------ | |
426 | ||
427 | (188) 02-Jan-2001 S Make pipe timeout a temporary error | |
428 | Georg v.Zezschwitz | |
429 | ||
430 | A way to make a timeout into a temporary error. | |
431 | ------------------------------------------------------------------------------ | |
432 | ||
433 | (190) 03-Jan-2001 M Multiple message operations in eximon | |
434 | ------------------------------------------------------------------------------ | |
435 | ||
436 | (195) 19-Mar-2001 T TCP window size | |
437 | ||
438 | TCP window size for receiving/sending, SMTP client/server. | |
439 | ------------------------------------------------------------------------------ | |
440 | ------------------------------------------------------------------------------ | |
441 | ||
442 | ||
443 | ||
444 | ------------------------------------------------------------------------------ | |
445 | ------------------------------------------------------------------------------ | |
446 | ----- Things that didn't make it into Exim 4 ------ | |
447 | ------------------------------------------------------------------------------ | |
448 | ------------------------------------------------------------------------------ | |
449 | ||
450 | . An option to send messages to postmaster when ignore_errmsg_errors_after | |
451 | times out. | |
452 | ||
453 | . When an address is being routed, its constituents are in $local_part and | |
454 | $domain, but there is currently no variable that contains the whole thing. It | |
455 | could be put into $recipient, but that risks confusion with $recipients | |
456 | (which is available in system filters). Maybe $address could be used? | |
457 | ||
458 | . The ability to relay to host X without knowing all the domains that host X | |
459 | might have. At ACL time, one would need to verify the recipient, and determine | |
460 | that it routed to host X. | |
461 | ||
462 | . A new lookup library that operates on a specially prepared file of IP | |
463 | addresses and masks so that a single "lookup" yields a yes/no answer. This | |
464 | should be a freestanding thing - needs a utility to build the file from a list. | |
465 | ||
466 | . People want to change the wording of messages; can we find an efficient way | |
467 | of allowing this? (Maybe put all messages into a separate module?) The problem | |
468 | is not in the messages themselves, but in the values that get inserted into | |
469 | messages. Would have to invent a new kind of function that used identified | |
470 | values rather than positional ones. Use GNU gettext? | |
471 | ||
472 | . Invent lf_hosts for those that may use LF without CR. Any other RFC | |
473 | things we need to worry about? | |
474 | ||
475 | . A user would really like to see something similar, perhaps with | |
476 | "ID=$authenticated_id", similar to "helo=" and "ident=" in the default received | |
477 | header. BUT there are security issues. Maybe give it as a commented out option | |
478 | in the default configuration? | |
479 | ||
480 | . Consider expanding further options that take integer values. What about | |
481 | smtp_xxx options for different limits at different times of day (for example)? | |
482 | What about tls_advertise_hosts (so can look at incoming IP/port)? | |
483 | ||
484 | . How about a "hold hosts" option (cf hold_domains) to hold delivery to certain | |
485 | hosts? | |
486 | ||
487 | . Allow user filters to use "headers add", but probably not remove. Or maybe | |
488 | just implement "allow" options for both of these features. | |
489 | ||
490 | . Have the return from pipe in a variable, so that (e.g. error_message_file) | |
491 | can make use of it. | |
492 | ||
493 | . Implement randomize for ldap/sql servers. | |
494 | ||
495 | . Add an option for ETRN that says "wait for the command to finish, and use its | |
496 | stdout as the SMTP response." | |
497 | ||
498 | . -odsomething for "ignore retry when doing immediate delivery". | |
499 | ||
500 | . Add an option to the smtp transport to make it treat 5xx on connection as if | |
501 | it were 4xx. Or possible add a sophisticated "after command X, treat xxx as | |
502 | yyy". | |
503 | ||
504 | . A way of rewriting addresses in non-standard header lines such as | |
505 | Mail-Followup-To. | |
506 | ||
507 | . Global option to enable initgroups() for exim uid. Default off. | |
508 | ||
509 | . When verifying a sender, should it be rewritten with any T rewrites, because | |
510 | it would be so rewritten if it actually was a recipient in a message? | |
511 | ||
512 | . Sean Witham wants a way of defining macros that are not privileged, and a | |
513 | sort of #ifdef structure that allows for different configurations in the same | |
514 | file. | |
515 | ||
516 | . Allow :fail: to specify that 551 be used instead of 550. Maybe allow a code | |
517 | at the start, optionally? What about :defer:? | |
518 | ||
519 | . SMTP timeout in middle of receiving message: log sender address if known, and | |
520 | possibly message_id if known. | |
521 | ||
522 | . Make -brw show rewrites for transports too. | |
523 | ||
524 | . Have the MTA log destinations that have timed-out on a ident request and | |
525 | no longer send rfc1413_queries to them. Add an option for how not to cache | |
526 | these entries. | |
527 | ||
528 | . Options and/or a utility to enable non-privileged users to view the queue | |
529 | (e.g. -bpp), manipulate their own messages, etc. | |
530 | ||
531 | . Specify a port along with a host in a route_list. | |
532 | ||
533 | . A generalized "From" escaping scheme that also escapes >From so that the | |
534 | whole thing can be reversed. | |
535 | ||
536 | . There was a request for the \dns_again_means_nonexist\ option not to be | |
537 | instantaneous, but to operate only after the DNS has been giving "try again" | |
538 | for some time. Use the misc hints database. | |
539 | ||
540 | ||
541 | ||
542 | ------------------------------------------------------------------------------ | |
543 | ------------------------------------------------------------------------------ | |
544 | ----- The Exim 4 Wish List ------ | |
545 | ------------------------------------------------------------------------------ | |
546 | ------------------------------------------------------------------------------ | |
547 | ||
548 | (1) 01-Jan-02 U Use of dynamically loaded libraries. | |
549 | ||
550 | People want Exim to use dynamically loaded modules for a variety of reasons. | |
551 | When I started to create Exim, I never expected anything other than source | |
552 | distribution; the RPMs and inclusions in OS distributions caught me by | |
553 | surprise. I know very little about the mechanics of dynamic loading, but I'm | |
554 | aware that not all operating systems support it. I'm also aware that not all | |
555 | people support it! | |
556 | ||
557 | Furthermore, a way round this might be to supply more hooks along the lines of | |
558 | local_scan(). Then people can write their own dynamic loaders if they want. | |
559 | ------------------------------------------------------------------------------ | |
560 | ||
561 | (3) 01-Jan-02 U Test for over-quota at SMTP time | |
562 | ||
563 | This is a hard one, because the only way to test for over quota is to try to | |
564 | deliver a message, certainly if system quotas are being used. And also, the | |
565 | only available size at RCPT time is the SIZE option, though of course the test | |
566 | could be run at DATA time. I think maybe we leave this one to an external | |
567 | program, and require people to use ${run} to access the data. Let someone else | |
568 | figure out how to extract the current mailbox size! | |
569 | ||
570 | One suggestion is to implement | |
571 | ||
572 | ${file_size:/path/to/file} | |
573 | ${directory_size:/path/to/directory} | |
574 | ||
575 | so that explicit checks can be done. It may be necessary to have four | |
576 | operators, two being based on the block count, and two showing the "visible" | |
577 | size. Directory scanning is expensive; is there any scope for caching? It would | |
578 | seem not (you don't often get two addresses to the same user). | |
579 | ------------------------------------------------------------------------------ | |
580 | ||
e05f33e0 PH |
581 | (6) 01-Jan-02 S Option to disable the use of -t |
582 | Dave C. | |
583 | ||
584 | Would require work so that Exim itself doesn't use -t. | |
585 | ------------------------------------------------------------------------------ | |
586 | ||
587 | (7) 01-Jan-02 M Avoid showing LDAP passwords in log lines for LDAP errors | |
588 | John W Baxter | |
589 | ||
590 | May be tricky, because at the higher levels, the format of the query is not | |
591 | understood. | |
592 | ------------------------------------------------------------------------------ | |
593 | ||
594 | (8) 01-Jan-02 S Expand once_repeat in autoreply | |
595 | John Jetmore | |
596 | ------------------------------------------------------------------------------ | |
597 | ||
598 | (9) 01-Jan-02 S Headers as well as body in file for autoreply | |
599 | Florian Laws | |
600 | ------------------------------------------------------------------------------ | |
601 | ||
602 | (10) 01-Jan-02 T Make "true" and "false" valid expansion conditions | |
603 | ||
604 | This might help with "and" and "or" when one of the sub-conditions is, for | |
605 | example, a lookup. | |
606 | ------------------------------------------------------------------------------ | |
607 | ||
608 | (11) 01-Jan-02 S Allow a filter to include another file. | |
609 | ------------------------------------------------------------------------------ | |
610 | ||
611 | (12) 01-Jan-02 M Support for different SQL servers per query | |
612 | ||
613 | In other words, the global mysql_servers etc. is too restrictive. | |
614 | ------------------------------------------------------------------------------ | |
615 | ||
616 | (14) 01-Jan-02 M? Support for Sendmail milters | |
617 | ||
618 | This could perhaps be done by extending the local_scan() idea and providing a | |
619 | "standard" module which interfaced to milter. | |
620 | ------------------------------------------------------------------------------ | |
621 | ||
622 | (15) 01-Jan-02 M More hooks like local_scan() | |
623 | ||
624 | One request has been for a similar hook at logging time. For other SMTP | |
0cf417c5 | 625 | interactions, maybe a hook into the ACL? See also 79 and 218 and 301. |
e05f33e0 PH |
626 | ------------------------------------------------------------------------------ |
627 | ||
628 | (17) 11-Jan-02 M The construction of config.h needs refactoring | |
629 | ||
630 | This has been hacked about substantially since the original implementation. | |
631 | Given that there is a program (buildconfig), the messing around with the | |
632 | environment could be abolished. Also, the distinction between "yes" and "no" | |
633 | isn't always properly made (tests for #ifdef don't care about the value). | |
634 | ------------------------------------------------------------------------------ | |
635 | ||
636 | (18) 24-Jan-02 S Make $value retain its value after a top-level expansion | |
637 | ||
638 | This was specifically for use in filter files. Currently it reverts to empty | |
639 | as a consequence of save/restore for every lookup. It might be confusing to | |
640 | do otherwise, however. | |
641 | ------------------------------------------------------------------------------ | |
642 | ||
643 | (19) 29-Jan-02 L Use of multiple DBM libraries | |
644 | ||
645 | The problem is how to handle conflicting function names. Much research is | |
646 | needed. | |
647 | ------------------------------------------------------------------------------ | |
648 | ||
649 | (20) 29-Jan-02 S Make system filter refreeze after manual thaw | |
650 | ||
651 | Currently, a "freeze" in a system filter doesn't freeze after a manual thaw. | |
652 | ------------------------------------------------------------------------------ | |
653 | ||
654 | (21) 12-Feb-02 S Expand return_size_limit | |
655 | Joachim Wieland | |
656 | ||
657 | Is this really worth it? A per-transport value is also suggested - that would | |
658 | mean remembering the value with each failed address and taking a minimum or | |
659 | a maximimum (which?). | |
660 | ------------------------------------------------------------------------------ | |
661 | ||
662 | (24) 21-Feb-02 ? A way of testing TLS using -bh | |
663 | ------------------------------------------------------------------------------ | |
664 | ||
665 | (27) 06-Mar-02 M Distinguishing between different temporary callout errors | |
666 | ||
667 | The request was to distinguish between a 4xx error and a failure to connect. | |
668 | Problem is: how to cope when there is more than one host? Maybe only if ALL | |
669 | fail to connect. An option like /callout_no_connect_ok. | |
670 | ------------------------------------------------------------------------------ | |
671 | ||
672 | (30) 12-Mar-02 S Add "recipients" precondition to routers. | |
673 | ||
674 | This would avoid having to use "condition". (See also requirement for $address | |
675 | mentioned above.) However, it would also require adding a caching feature, and | |
676 | probably $recipient_data (cf $domain_data). | |
677 | ------------------------------------------------------------------------------ | |
678 | ||
679 | (31) 21-Mar-02 S Variables that indicate 8-bit message and 8-bit host, and | |
680 | a way of using them to suppress a transport filter | |
681 | ||
682 | A variable that is set if the message contains 8-bit characters, and another | |
683 | that is set during the smtp transport if the host supports 8-bit. Then we also | |
684 | need a condition that's expanded in the transport to control whether the filter | |
685 | is run or not (e.g. transport_filter_condition). | |
686 | ------------------------------------------------------------------------------ | |
687 | ||
688 | (32) 22-Mar-02 M More info about callout fails for header sender verify | |
689 | ||
690 | When there's a callout failure for an envelope address, the error message | |
691 | contains details (by default) of the callout commands. This doesn't happen | |
692 | for addresses in the header because there may be more than one of them, and | |
693 | deciding how to give that information is tricky. Can we do better? | |
694 | ------------------------------------------------------------------------------ | |
695 | ||
696 | (33) 25-Mar-02 S Option to assume nomatch in dnslist lookups that time out | |
697 | ||
698 | Currently this causes a DEFER. | |
699 | ------------------------------------------------------------------------------ | |
700 | ||
701 | (34) 26-Mar-02 S Access to DNS lookup functions via local_scan() API | |
702 | ||
703 | This would make local_scan() writers lives easier for DNS usage. | |
704 | ------------------------------------------------------------------------------ | |
705 | ||
706 | (36) 02-Apr-02 ? A way of throttling, but allowing, relaying that would | |
707 | otherwise be denied | |
708 | ||
709 | This was suggested in connection with anonymizing messages. The "wait" command | |
710 | in ACLs goes some way towards this. Is it enough? | |
711 | ------------------------------------------------------------------------------ | |
712 | ||
713 | (41) 17-Apr-02 T Make config.samples available as a directory for ftp | |
714 | ||
715 | This is so that people can browse individual samples directly. | |
716 | ------------------------------------------------------------------------------ | |
717 | ||
718 | (42) 23-Apr-02 T An option not to flatten newlines in $message_body. | |
719 | ||
720 | Or maybe better to provide $message_body_nl so as to have both. | |
721 | ------------------------------------------------------------------------------ | |
722 | ||
723 | (43) 23-Apr-02 T An option to treat 4xx as 5xx from STARTTLS | |
724 | ||
725 | This would make Exim retry in clear unless the host is in hosts_require_tls. | |
726 | ------------------------------------------------------------------------------ | |
727 | ||
728 | (44) 24-Apr-02 ? Use errors_to for timeouts after redirect syntax errors | |
729 | ||
730 | A syntax error in redirection data (with skip_syntax_errors false) causes a | |
731 | defer. Eventually, the address may time out. This suggestion is that, when it | |
732 | does, the bounce is sent to errors_to rather than to the sender. | |
733 | ------------------------------------------------------------------------------ | |
734 | ||
735 | (45) 13-May-02 T smtp_etrn_serialize_id = .... | |
736 | ||
737 | The default behaviour would be equivalent to | |
738 | ||
739 | smtp_etrn_serialize_id = $smtp_command_argument | |
740 | ------------------------------------------------------------------------------ | |
741 | ||
742 | (47) 16-May-02 S Access to all addresses in batched local delivery | |
743 | Miquel van Smoorenburg | |
744 | ||
745 | In a batched local delivery with more than one recipient, there's no way to | |
746 | access the list of recipients for doing custom things, such as stuffing them | |
747 | all into a header. (BSMTP is the only approach; not everybody can use it.) | |
748 | Suggested patch supplied. | |
749 | ------------------------------------------------------------------------------ | |
750 | ||
751 | (48) 21-May-02 M Support for ATRN (server and client) | |
752 | Brian Candler | |
753 | ||
754 | Server: If Exim had the ability to accept an ATRN command and then simply | |
755 | invoke an external program, passing the SMTP stream on stdin and stdout and | |
756 | the authenticated id as a parameter, that would do the job nicely. | |
757 | ||
758 | Client: We need a variant of 'exim -bs' which would connect to a specified | |
759 | host, send AUTH/ATRN, and then accept incoming messages as usual. | |
760 | ------------------------------------------------------------------------------ | |
761 | ||
fc9c2317 | 762 | (50) 22-May-02 S? Add comment (duplicate address) to Envelope-To: |
e05f33e0 | 763 | |
fc9c2317 PH |
764 | This is just to minimize the confusion some people have. However, it is not |
765 | trivially easy to decide which to label as duplicates because of complications | |
766 | with redirection. I'm not convinced it will actually reduce confusion. | |
e05f33e0 PH |
767 | ------------------------------------------------------------------------------ |
768 | ||
769 | (51) 07-Jun-02 S Option to use another address in callout MAIL FROM | |
770 | ||
771 | This would be an address to try if MAIL FROM:<> failed. Is this actually going | |
772 | to be helpful? See also 101. | |
773 | ------------------------------------------------------------------------------ | |
774 | ||
775 | (53) 11-Jun-02 S Make local_scan() dynamically loadable | |
776 | ||
777 | David Woodhouse sent a patch. There's a more sophisticated one from Marc | |
778 | Merlin. (See also Peter Benie's comments.) But should the base Exim have all | |
779 | this in it? | |
780 | ------------------------------------------------------------------------------ | |
781 | ||
782 | (54) 11-Jun-02 S Ignore -Ac if called as mailq | |
783 | ||
784 | I am not sure if this makes sense. This flag requests a listing of a different | |
785 | mail queue, but Exim doesn't work like that. Is is not better for people to be | |
786 | aware of this? | |
787 | ------------------------------------------------------------------------------ | |
788 | ||
789 | (55) 13-Jun-02 M Rewriting whole header lines | |
790 | Dave C. | |
791 | ||
792 | Current rewriting rules apply to individual addresses in header lines. This | |
793 | feature would use a regex to match whole lines and replace them. It could be | |
794 | useful for patching up syntactically invalid lines from crappy clients, before | |
795 | the syntax check kicks in. (It might also be useful for hiding local host names | |
4990831e | 796 | in Received: headers.) See also 333. |
e05f33e0 PH |
797 | ------------------------------------------------------------------------------ |
798 | ||
799 | (58) 26-Jun-02 ? Extend PAM support | |
800 | ||
801 | Apparently PAM can do challenge-response authentication. The Exim interface | |
802 | can't handle this. Investigate and think about how to do this. | |
803 | ------------------------------------------------------------------------------ | |
804 | ||
805 | (59) 26-Jun-02 M A "custom" authenticator | |
806 | ||
807 | ... that is simply a front end to external code. For example, there may be | |
808 | an external API that hides the user password and does CRAM-MD5 when passed the | |
809 | details of the challenge and response. | |
810 | ------------------------------------------------------------------------------ | |
811 | ||
812 | (60) 27-Jun-02 S Make trusted_users a local part list | |
813 | ||
814 | So that it can use lsearch etc. | |
815 | ------------------------------------------------------------------------------ | |
816 | ||
817 | (62) 28-Jun-02 S Remove headers before DATA ACL | |
818 | Patrice Fournier | |
819 | ||
820 | "I'd like to be able to give Exim a list of headers that must be removed | |
821 | from the message at arrival, before data_acl processing (and before the | |
4990831e | 822 | rcpt_acl warn headers are added to the message)." See also 333. |
e05f33e0 PH |
823 | ------------------------------------------------------------------------------ |
824 | ||
825 | (63) 28-Jun-02 S Access to ACL-added headers in ACLs | |
826 | Patrice Fournier | |
827 | ||
828 | "I'd like also to be able to look at the already added headers by a | |
829 | rcpt_acl when still checking rcpt_acl (either later in the acl for the same | |
4990831e | 830 | RCPT TO or for another RCPT TO)." See also 333. |
e05f33e0 PH |
831 | ------------------------------------------------------------------------------ |
832 | ||
833 | (65) 28-Jun-02 M Expand fallback hosts | |
834 | ||
835 | See also 174 of the Exim 3 list. | |
836 | ------------------------------------------------------------------------------ | |
837 | ||
838 | (66) 01-Jul-02 M Use Berkeley DB 4 concurrent access features | |
839 | ||
840 | This might give better performance on very busy sites by reducing the | |
841 | contention for access to hints databases. Rob Butler points out that this could | |
842 | also be useful to allow updates of other DB files used by Exim to happen | |
843 | concurrently. Another thing to think about with BDB is the possible use of | |
844 | B-trees. | |
845 | ------------------------------------------------------------------------------ | |
846 | ||
847 | (68) 01-Jul-02 S Add sender host to delivery line | |
848 | ||
849 | "Would it be possible to have a "sending_host_on_delivery" option that | |
850 | logs the IP of the sending host in the => line?" Also requested was amount of | |
851 | data transmitted for a non-delivery attempt. | |
852 | ------------------------------------------------------------------------------ | |
853 | ||
854 | (69) 03-Jul-02 T Log selector to log whoson checs | |
855 | Matt Bernstein | |
856 | ||
857 | "I'd quite like a log_selector option which could spot you'd done a whoson | |
858 | lookup in your DATA ACL and maybe log it as W=user." | |
859 | ------------------------------------------------------------------------------ | |
860 | ||
861 | (70) 09-Jul-02 S A way of changing the RCPT address in an accept router | |
862 | ||
863 | So as to avoid duplication problems when sending multiple addresses in multiple | |
864 | copies to the same address. | |
865 | ------------------------------------------------------------------------------ | |
866 | ||
867 | (73) 17-Jul-02 M Match a list from within a condition | |
868 | ||
869 | e.g. ${if matchdomain {$domain}{+domainlist} ... | |
870 | ${if matchhost {$sender_host_address}{1.2.3.4/10:2.3.4.5/16}... | |
871 | ||
872 | Thought needed about how to handle host names. This may be too messy to specify | |
873 | cleanly. | |
874 | ||
875 | 22-Apr-04: Implemented for domains, addresses, and local parts. Hosts are | |
876 | too messy! | |
f7b63901 PH |
877 | |
878 | The only sensible approach seems to be to allow IP address arguments only. | |
879 | Anything else should be diagnosed as an error. However, if a name appears in | |
880 | the list, a PTR lookup should be done. This may require a lot of refactoring | |
fc9c2317 PH |
881 | in the code, because of the current assumption that were are (almost) always |
882 | dealing with THE sending host. | |
e05f33e0 PH |
883 | ------------------------------------------------------------------------------ |
884 | ||
885 | (74) 22-Jul-02 M Extend -bV to do more semantic checking | |
886 | ||
887 | For example, diagnose "local_hosts" that should probably be "+local_hosts". | |
888 | ------------------------------------------------------------------------------ | |
889 | ||
890 | (75) 23-Jul-02 S Reference option on command line | |
891 | ||
892 | The idea here is that a spam scanner that re-injects a message can supply a | |
893 | reference on the command line that gets logged with R=. | |
894 | ------------------------------------------------------------------------------ | |
895 | ||
896 | (78) 30-Jul-02 S Expand queue_only (and/or queue_only_file) | |
897 | ||
898 | The requirement is to make it possible to queue messages if certain conditions | |
899 | are met (e.g. messages from certain local users). See also 93. | |
900 | ||
901 | This control can now be achieved in the ACL - is this still needed? | |
902 | ------------------------------------------------------------------------------ | |
903 | ||
904 | (79) 31-Jul-02 S Additional info for log lines | |
905 | ||
906 | An option to set an expanded string to be added to <= lines. And also for the | |
907 | other delivery lines? See also 15. | |
908 | ------------------------------------------------------------------------------ | |
909 | ||
910 | (84) 09-Aug-02 S Make interfaces available in a variable | |
911 | ||
912 | Something like $local_interfaces. Maybe limit the max length. | |
913 | ------------------------------------------------------------------------------ | |
914 | ||
915 | (85) 12-Aug-02 S/M Notice database connection failures | |
916 | ||
917 | The small version of this just removes a server from the list within a single | |
918 | Exim process when a connection to it fails. The bigger project would use the | |
919 | retry database - but that has implications for bottlenecking and may not be | |
920 | helpful. See also item 109. Another suggestion is to randomize the order in | |
921 | which database servers are tried (randomize_database_servers). And another is | |
922 | to measure response times and remember which server is fastest. | |
923 | ------------------------------------------------------------------------------ | |
924 | ||
925 | (87) 12-Aug-02 M Partial lookups for query-style lookups | |
926 | ||
927 | The suggestion is to allow the lookup to contain a keystring (same syntax as | |
928 | single-key lookups) which is then permuted and place in a suitable variable | |
929 | each time - $permuted_key or something. | |
930 | ------------------------------------------------------------------------------ | |
931 | ||
932 | (88) 20-Aug-02 S Allow special retrying for forced defer | |
933 | ||
934 | See also 146 in Exim 3 wish list above. | |
935 | ------------------------------------------------------------------------------ | |
936 | ||
937 | (89) 20-Aug-02 S Also allow retry rules on routers and transports | |
938 | ------------------------------------------------------------------------------ | |
939 | ||
940 | (90) 23-Aug-02 M Macros with arguments, a la C | |
941 | ||
942 | I don't like this, because of the cost of frequent interpretation. | |
943 | ------------------------------------------------------------------------------ | |
944 | ||
945 | (93) 27-Aug-02 S queue_only_condition | |
946 | Peter A. Savitch | |
947 | ||
948 | queue_only_condition global option, expanded string. This contain | |
949 | condition, which if evaluated to `no' or `false' or `0', behaves like | |
950 | queue_only (queue_only_load ?). Don't know what to do is the string | |
951 | expansion fails with DEFER (either force queueing or continue with | |
952 | immediate delivery). Another option can control Exim behaviour if the | |
953 | expansion fails. Don't know how the name for it ;-) See also 78. | |
954 | ||
955 | This control can now be achieved in the ACL - is the new feature now needed? | |
956 | ------------------------------------------------------------------------------ | |
957 | ||
958 | (95) 27-Aug-02 S Log all parents as a router option | |
959 | ||
960 | So that specific addresses can be logged like this. Should there be more log | |
961 | selector options per router? Per transport? | |
962 | ------------------------------------------------------------------------------ | |
963 | ||
964 | (99) 28-Aug-02 L Test pre-conditions in order given | |
965 | ||
966 | This would get round certain problems with require_files. However, it is | |
967 | totally incompatible, and therefore an "Exim 5" wish. | |
968 | ------------------------------------------------------------------------------ | |
969 | ||
970 | (101) 02-Oct-02 M Callout and <> rejections | |
971 | ||
972 | Some people don't want to fail the callout if the MAIL FROM:<> command is | |
973 | rejected. Think of a way of handling this tidily. See also 51. | |
974 | ------------------------------------------------------------------------------ | |
975 | ||
976 | (102) 03-Oct-02 M Log option to suppress message-id logging | |
977 | ||
978 | M because it would involve a change to eximstats. | |
979 | ------------------------------------------------------------------------------ | |
980 | ||
981 | (106) 09-Oct-02 S Appendfile to create directory not as user | |
982 | ||
983 | Arrange for the setup entry to appendfile to create the directory under some | |
984 | other uid (and with given owners/permissions?) | |
985 | ------------------------------------------------------------------------------ | |
986 | ||
987 | (109) 15-Oct-02 M Remember when LDAP (etc) servers are down | |
988 | ||
989 | The idea would be to use some kind of retry rule, just like for hosts. | |
990 | See also 85. | |
991 | ------------------------------------------------------------------------------ | |
992 | ||
993 | (110) 18-Oct-02 M errors_to for pipe command in filter | |
994 | ||
995 | To work in the same was as errors_to for deliver commands. | |
996 | ------------------------------------------------------------------------------ | |
997 | ||
998 | (113) 15-Nov-02 M support for XMLRPC | |
999 | ||
1000 | Patch supplied for 4.10 by Joel Vandal. | |
1001 | ------------------------------------------------------------------------------ | |
1002 | ||
1003 | (114) 04-Dec-02 M local_scan: return message on accept | |
1004 | ||
1005 | (This actually dates from earlier.) The problem with this is that the string | |
1006 | currently passes into $local_scan_data. Thus, an incompatible change of some | |
1007 | sort would be required. Possibly a global that local_scan can set? | |
1008 | ------------------------------------------------------------------------------ | |
1009 | ||
1010 | (118) 10-Dec-02 S access to Perl from local_scan | |
1011 | ------------------------------------------------------------------------------ | |
1012 | ||
1013 | (119) 12-Dec-02 M ability to specify additional headers in an autoreply | |
1014 | ||
1015 | This is so that vacation messages etc can have MIME headers that specify, for | |
1016 | example, the character set. | |
1017 | ------------------------------------------------------------------------------ | |
1018 | ||
1019 | (125) 02-Jan-03 M Per-host daemon logging | |
1020 | ||
1021 | "So what I would like is an option like debug_hosts, that allows to specify | |
1022 | an hostlist, and if the current incoming/outgoing hosts matches, creates a | |
1023 | logfile like $hostname_(in|out).log in my logdirectory." | |
1024 | ------------------------------------------------------------------------------ | |
1025 | ||
1026 | (127) 06-Jan-03 M Different messages for different callout failures | |
1027 | ||
1028 | The real requirement here is to detect when a callout "MAIL FROM:<>" failed, so | |
1029 | that a specific warning about that can be sent, different to the message when a | |
1030 | callout "RCPT TO:" fails. I think this is in fact now mostly done. | |
1031 | ------------------------------------------------------------------------------ | |
1032 | ||
1033 | (129) 09-Jan-03 M Keep track of DNSBL timeouts, and refrain from calling | |
1034 | ||
1035 | If so configured, keep track of DNSBL timeouts in a hints record, and don't | |
1036 | retry that DNSBL for a while after (a sufficient number of) timeouts. It is | |
1037 | effectively disabled for a while. Log enable/disable, of course. Another | |
1038 | thought is an option not to apply +defer_unknown unless *all* DNSBL lookups in | |
1039 | a list defer. | |
1040 | ------------------------------------------------------------------------------ | |
1041 | ||
1042 | (130) 09-Jan-03 M A number of LDAP-related things | |
1043 | Peter A. Savitch | |
1044 | ||
1045 | OpenLDAP 2.1 is going to be more popular (2.1.9 is available with many | |
1046 | bug fixes). TLS-enabled LDAP is an interesting and usefull thing. | |
1047 | I can try to implement some things and send the patches, like with | |
1048 | ldapi. | |
1049 | ||
1050 | How do You see: | |
1051 | ||
1052 | 1) The propagation of TLS options (key, certificate, CA certificate) | |
1053 | to the OpenLDAP library. | |
1054 | ||
1055 | 2) (was dereferencing; done in 4.23). | |
1056 | ------------------------------------------------------------------------------ | |
1057 | ||
1058 | (131) 09-Jan-03 S Additional variables | |
1059 | Peter A. Savitch | |
1060 | ||
1061 | $root_uid Why? | |
1062 | ||
1063 | (Some that were previously here are done) | |
1064 | ||
1065 | $smtp_accept_count -- used for acl_smtp_connect | |
1066 | ||
1067 | $queue_runners -- children of the listening daemon could use this | |
1068 | value for controlling the number of queue runners | |
1069 | ||
1070 | I don't like either of these because they cannot be real-time values. They | |
1071 | would be snapshots of the values at the time the process was forked from the | |
1072 | daemon, and I fear they would just be confusing. For processes that were not | |
1073 | forked from the daemon they couldn't be set at all. | |
1074 | ------------------------------------------------------------------------------ | |
1075 | ||
1076 | (131) 09-Jan-03 S Additional options | |
1077 | Peter A. Savitch | |
1078 | ||
1079 | exim_processes_max | |
1080 | exim_file_descriptors_max | |
1081 | queue_run_condition -- to deprecate queue_run_max, better system | |
1082 | load control | |
1083 | ||
1084 | Given Exim's distributed nature, I'm not at all sure how the first two of these | |
1085 | can usefully be implemented. | |
1086 | ------------------------------------------------------------------------------ | |
1087 | ||
1088 | (132) 16-Jan-03 M Option for when a transport filter fails (crashes) | |
1089 | ||
1090 | Freezing is one obvious option. Currently, Exim just retries. Another user | |
1091 | wanted to retry without the filter, but that is much harder. | |
1092 | ------------------------------------------------------------------------------ | |
1093 | ||
1094 | (136) 24-Jan-03 M Make "personal" available as a condition for use in routers | |
1095 | ------------------------------------------------------------------------------ | |
1096 | ||
1097 | (138) 28-Jan-03 M A variable containing what was matched in a host list | |
1098 | ||
1099 | Or, presumably, other lists. This is so that ACL messages can say things like | |
1100 | "your host name matches xxxx". Note: not the same as $domain_data. Also, this | |
1101 | could be tricky with lookups and things that match in files. | |
1102 | ------------------------------------------------------------------------------ | |
1103 | ||
1104 | (143) 06-Mar-03 L Ability to have multiple authenticators of same type | |
1105 | ||
1106 | For example, to have two PLAIN authenticators; if the first fails, try the | |
1107 | second. | |
1108 | ------------------------------------------------------------------------------ | |
1109 | ||
1110 | (144) 07-Mar-03 T ACL control = local_scan_skip to skip the local scan | |
1111 | ||
1112 | A bigger project would be control = local_scan <xxx> where xxx could select | |
1113 | different local_scan functions (possibly by dynamic loading). | |
1114 | ||
1115 | This can now be simulated using the fact that ACL variables are preserved, | |
1116 | so it doesn't look as it once did. | |
1117 | ------------------------------------------------------------------------------ | |
1118 | ||
1119 | (145) 07-Mar-03 T Export string_cat() to local_scan() | |
1120 | ------------------------------------------------------------------------------ | |
1121 | ||
1122 | (147) 17-Mar-03 T Option to treat 5xx as 4xx if received on initial connection | |
1123 | ||
1124 | This issue is controversial. That may be a good reason for not changing | |
1125 | anything. | |
1126 | ------------------------------------------------------------------------------ | |
1127 | ||
1128 | (153) 25-Apr-03 S A way of making log_as_local apply to the smtp transport | |
1129 | ||
1130 | Either an option on the transport, or log_remote_as_local for the router. | |
1131 | Messy, either way. Maybe log_local_as_local and log_remote_as_local, and | |
1132 | deprecate log_as_local? | |
1133 | ------------------------------------------------------------------------------ | |
1134 | ||
1135 | (154) 01-May-03 M Teergrubing at the CR/LF level | |
1136 | ||
1137 | It is believed that the most effective way to teergrube is to insert a delay | |
1138 | between transmitting CR and LF in the SMTP response. Furthermore, this is also | |
1139 | the best place to test for bad synchronization (i.e. at the last possible | |
1140 | time). | |
1141 | ------------------------------------------------------------------------------ | |
1142 | ||
1143 | (155) 01-May-03 S "control=no_pipelining" for connect and EHLO ACLs | |
1144 | ||
1145 | Yet more flexibility! Maybe this should be a more general control for what is | |
1146 | sent in response to EHLO. | |
1147 | ------------------------------------------------------------------------------ | |
1148 | ||
1149 | (156) 06-May-02 M Finer-grained synchronisation checking | |
1150 | ||
1151 | On operating systems that can be asked whether any sent bytes have not yet been | |
1152 | ACK'd at the TCP/IP level, a finer-grained check for proper synchronisation can | |
1153 | be done. All bytes must have been ACK'd if the client has received the previous | |
1154 | response before sending the next command. See also 293. | |
1155 | ------------------------------------------------------------------------------ | |
1156 | ||
1157 | (157) 07-May-03 M Newline as a list item separator | |
1158 | ||
1159 | This will make life easier for lists obtained form databases where the | |
1160 | separator is naturally a newline. | |
1161 | ------------------------------------------------------------------------------ | |
1162 | ||
1163 | (158) 13-May-03 M Ability to add to OK message for SMTP commands | |
1164 | ||
1165 | For sending reasons for slow response, etc. | |
1166 | ------------------------------------------------------------------------------ | |
1167 | ||
1168 | (160) 19-May-03 M Remove headers using wild cards | |
4990831e PH |
1169 | |
1170 | See also 333. | |
e05f33e0 PH |
1171 | ------------------------------------------------------------------------------ |
1172 | ||
1173 | (162) 28-May-03 M/L Use of real numbers in filters, expansions, and options | |
1174 | ||
1175 | The motivation for this is for handling spam scores that are real numbers. The | |
1176 | questions are (a) how widely should it spread and (b) whether floating point or | |
1177 | fixed point representations should be used. And what about the eval operator? | |
1178 | ------------------------------------------------------------------------------ | |
1179 | ||
1180 | (164) 02-Jun-03 S Set variables for interface and port in smtp transport | |
1181 | ||
1182 | These could be useful for varying HELO data etc. See also several other | |
1183 | items about interfaces above. | |
1184 | ------------------------------------------------------------------------------ | |
1185 | ||
1186 | (166) 18-Jun-03 S CN verification in client TLS code | |
1187 | ||
1188 | A tls_verify_cn option is suggested by Sven Geggus. | |
1189 | ------------------------------------------------------------------------------ | |
1190 | ||
1191 | (168) 19-Jun-03 S Ability to add a header recording envelope rewrites | |
1192 | ||
1193 | Current code adds a deleted header with only some information. Maybe what is | |
1194 | needed is a flag for a rewrite rule. | |
1195 | ------------------------------------------------------------------------------ | |
1196 | ||
1197 | (169) 19-Jun-03 M A way of detecting timeouts in callout returns | |
1198 | ||
1199 | ------------------------------------------------------------------------------ | |
1200 | ||
1201 | (170) 23-Jun-03 S Option to accept rather than defer after local scan timeout | |
1202 | ||
1203 | Suggested patch supplied. | |
1204 | ------------------------------------------------------------------------------ | |
1205 | ||
1206 | (171) 23-Jun-03 S Option to make timeout a soft failure on pipe transport | |
1207 | ||
1208 | ------------------------------------------------------------------------------ | |
1209 | ||
1210 | (172) 23-Jun-03 M Option to make SQL query to specific server | |
1211 | ||
1212 | ------------------------------------------------------------------------------ | |
1213 | ||
1214 | (175) 04-Jul-03 S show_all_ancestors_in_errmsg for the redirect router | |
1215 | ||
1216 | This is the opposite of hide_child_in_errmsg in effect. | |
1217 | ------------------------------------------------------------------------------ | |
1218 | ||
1219 | (180) 14-Jul-03 M Extend never_users to be more flexible | |
1220 | ||
1221 | e.g. never_users = ! mailnull : ! cyrus : !mailman : 0-100 | |
1222 | ------------------------------------------------------------------------------ | |
1223 | ||
1224 | (183) 16-Jul-03 S freeze_tell_text to add custom text to the message | |
1225 | ||
1226 | ------------------------------------------------------------------------------ | |
1227 | ||
1228 | (185) 24-Jul-03 S An expansion operator that decodes RFC 2047 strings | |
1229 | ||
1230 | ------------------------------------------------------------------------------ | |
1231 | ||
1232 | (188) 13-Aug-03 T batch_max=0 to mean unlimited | |
1233 | ||
1234 | ------------------------------------------------------------------------------ | |
1235 | ||
1236 | (189) 22-Aug-03 S Allow filter "logwrite" to write to syslog | |
1237 | ||
1238 | I feel this is a dangerous facility, and also of very minority interest, at | |
1239 | least for user's filters. Allowing a system filter to write to mainlog or | |
1240 | syslog may be different. However, writing the main log would only be possible | |
1241 | if the filter runs as root or exim. | |
1242 | ------------------------------------------------------------------------------ | |
1243 | ||
1244 | (190) 22-Aug-03 S A way of testing "forced delivery" in filter and routers | |
1245 | ------------------------------------------------------------------------------ | |
1246 | ||
1247 | (191) 26-Aug-03 M Preserve $address_data for a verified recipient | |
1248 | ||
1249 | The idea is to preserve it in the recipients data structure so that local_scan | |
1250 | can have access to it. The value could also be used as the initial value of | |
1251 | $address_data while routing. | |
1252 | ------------------------------------------------------------------------------ | |
1253 | ||
1254 | (192) 05-Sep-03 M Better handling of TXT records for dnslists | |
1255 | ||
1256 | When multiple lists are accessible via a merged lookup, handling TXT records | |
1257 | is difficult. An option for doing the TXT lookup in a sub-list has been | |
1258 | suggested, with syntax such as | |
1259 | ||
1260 | dnslists = list.example.org=127.0.0.2%dialups \ | |
1261 | ,127.0.0.3%relays \ | |
1262 | ,127.0.0.5%spews | |
1263 | ------------------------------------------------------------------------------ | |
1264 | ||
1265 | (194) 10-Sep-03 M $addresslist_data to be like $host_data/$domain_data | |
1266 | ||
1267 | ------------------------------------------------------------------------------ | |
1268 | ||
1269 | (195) 29-Sep-03 M A variable containing the error for verify = header_syntax | |
1270 | ||
1271 | Maybe there should always be a variable with the error message for all the | |
1272 | different kinds of verify failure. | |
1273 | ------------------------------------------------------------------------------ | |
1274 | ||
1275 | (196) 30-Sep-03 S A way of detecting whether it was HELO or EHLO in the ACL | |
1276 | ||
1277 | $received_protocol isn't reset until after the command is accepted (which | |
1278 | seems right), and $smtp_data shows only the arguments. Maybe $smtp_command? | |
1279 | ------------------------------------------------------------------------------ | |
1280 | ||
1281 | (197) 30-Sep-03 S MACROS_DROP_PRIVS and ALT_CONFIG_DROP_PRIVS | |
1282 | ||
1283 | Now that alternative configurations can be restricted to certain directories, | |
1284 | some more flexibility can be allowed. Not by default, though. | |
1285 | ------------------------------------------------------------------------------ | |
1286 | ||
1287 | (198) 01-Oct-03 M Accept mail after local_scan() crash instead of defer | |
1288 | ||
1289 | This may not be as easy to implement as it sounds; one is never sure of the | |
1290 | environment after a crash. Is is actually a good idea? The crashing local_scan | |
1291 | may have wrecked the memory in arbitrary ways; for example, screwing up the | |
1292 | recipients list... | |
1293 | ------------------------------------------------------------------------------ | |
1294 | ||
1295 | (199) 01-Oct-03 M ${pipe which will pipe the message to a script ... | |
1296 | ||
1297 | ... and otherwise behave as ${run. Probably needs to have locking out features | |
1298 | so that it can be turned off for users .forwards if the sysadmin so desires. | |
1299 | ------------------------------------------------------------------------------ | |
1300 | ||
1301 | (200) 07-Oct-03 L Alternative ways of storing hints | |
1302 | ||
1303 | People want to store hints in databases. Some assert that SQL databases can | |
1304 | be made to perform satisfactorily. If a general interface could be worked on, | |
1305 | people could at least try different strategies. See also 66 above, which is | |
1306 | specifically concerned with Berkeley DB. Another possible option is a switch to | |
1307 | disable smtp-wait hints - to avoid contention problems. | |
1308 | ------------------------------------------------------------------------------ | |
1309 | ||
1310 | (201) 07-Oct-03 M A "soft bounce" feature | |
1311 | ||
1312 | This is an option that turns all hard bounces into soft bounces. The idea is | |
1313 | that it can be used as a safety-net while testing configurations. Instead of a | |
1314 | local bounce, the message stays on the queue; instead of 5xx SMTP responses, | |
1315 | 4xx ones are given. | |
1316 | ||
1317 | The ability to do the opposite - turn 4xx into 5xx under certain circumstances | |
1318 | might also be useful (e.g. after a certain time). This might best be done by | |
1319 | extending the retry logic to recognize 4xx as a special error. (This is now | |
1320 | done.) | |
1321 | ------------------------------------------------------------------------------ | |
1322 | ||
1323 | (202) 10-Oct-03 S -bvsomething to do a callout after the verify | |
fb636a0f PH |
1324 | |
1325 | For example: -bvc and -bvsc. The problem now (Nov 04) is that there are quite a | |
1326 | few possible callout options that can be specified in an ACL, and they would | |
1327 | have to be replicated here. | |
e05f33e0 PH |
1328 | ------------------------------------------------------------------------------ |
1329 | ||
1330 | (203) 14-Oct-03 S verify=something to easily check for header presence | |
1331 | ||
1332 | This is purely cosmetic; "condition" can already be used. | |
1333 | ------------------------------------------------------------------------------ | |
1334 | ||
1335 | (204) 27-Oct-03 S an inverted queue_only_file | |
1336 | ||
1337 | That is, queue if a file does NOT exist. | |
1338 | ------------------------------------------------------------------------------ | |
1339 | ||
1340 | (205) 27-Oct-03 S expand smtp_accept_queue_per_connection | |
1341 | ||
1342 | ------------------------------------------------------------------------------ | |
1343 | ||
1344 | (206) 27-Oct-03 S appendfile: a variable containing the maildir base name | |
1345 | ||
1346 | ------------------------------------------------------------------------------ | |
1347 | ||
1348 | (207) 29-Oct-03 S ability to keep trusted users in a file - expand it. | |
1349 | ------------------------------------------------------------------------------ | |
1350 | ||
1351 | (208) 31-Oct-03 M cache temporary verification errors and fail after a time | |
1352 | ||
1353 | This request was for a way of turning temporary verification failures into | |
1354 | permanent ones after some fixed time. | |
1355 | ------------------------------------------------------------------------------ | |
1356 | ||
1357 | (209) 31-Oct-03 S a way of making crashes in pipe commands temporary errors | |
1358 | ||
1359 | ------------------------------------------------------------------------------ | |
1360 | ||
1361 | (210) 31-Oct-03 S runtime option to change the daemon name used for tcprwappers | |
1362 | ||
1363 | A patch for compile time was supplied, but this seems better as a runtime | |
1364 | option, for use with multiple Exim daemons. | |
1365 | ------------------------------------------------------------------------------ | |
1366 | ||
1367 | (211) 31-Oct-03 S ability to disable debugging output from -bh & -bhc | |
1368 | ------------------------------------------------------------------------------ | |
1369 | ||
1370 | (212) 31-Oct-03 M specify headers lines in HELO ACL to be added to all msgs | |
4990831e PH |
1371 | |
1372 | See also 333. | |
e05f33e0 PH |
1373 | ------------------------------------------------------------------------------ |
1374 | ||
1375 | (214) 05-Nov-03 S Put the wild part of local part prefix/suffx in variables | |
1376 | ||
1377 | Unfortunately, this isn't quite as trivial as it seems. | |
1378 | ------------------------------------------------------------------------------ | |
1379 | ||
1380 | (215) 14-Nov-03 S A way of turning off message-submission fix-ups | |
1381 | ||
1382 | Globally, and perhaps also via an ACL control so that it can be done on a | |
fb636a0f PH |
1383 | per-message basis. Is this still needed? Since this item was added to this |
1384 | list, default fixups for non-local messages have been removed, and control = | |
1385 | submission has been added. | |
e05f33e0 PH |
1386 | ------------------------------------------------------------------------------ |
1387 | ||
1388 | (215) 26-Nov-03 M/L Conversion of IDNA domain names for logging | |
1389 | ||
1390 | IDNA (RFCs 3490-3492) converts domains names containing non-ASCII characters | |
1391 | into ASCII strings of a special form. Exim will of course handle these. | |
1392 | However, it might be nice to convert them to a local code for logging. This | |
1393 | might be quite a big project: there's also output from -bp and eximon queue | |
1394 | display and no doubt other places as well. (Utilities that process the logs, | |
1395 | e.g. exigrep, eximstats, will be automatically handled if the logs are | |
1396 | changed.) | |
1397 | ------------------------------------------------------------------------------ | |
1398 | ||
1399 | (216) 27-Nov-03 S Option to bounce if required TLS doesn't happen | |
1400 | ||
1401 | This is for the smtp transport with hosts_require_tls set. Currently, it | |
1402 | defers. Possibly the best approach is to make the error one that can be seen by | |
1403 | the retry logic. | |
1404 | ------------------------------------------------------------------------------ | |
1405 | ||
1406 | (217) 27-Nov-03 M A function to pass back variables from Perl | |
1407 | ||
1408 | This is a function that can be called from Perl, to take a name and a value and | |
1409 | put that value into an Exim variable. | |
1410 | ------------------------------------------------------------------------------ | |
1411 | ||
1412 | (218) 01-Dec-03 M A local_scan-like hook at system filter time | |
1413 | ||
1414 | That is, make a C API available for custom filtering at this point. | |
1415 | ------------------------------------------------------------------------------ | |
1416 | ||
1417 | (221) 18-Dec-03 U Merge routers and ACLs - or at least make more similar | |
1418 | ||
1419 | "It will be very useful to be able to use most of the ACL conditions | |
1420 | (authenticated, hosts, senders, sender_domains, ... ) in routers and also the | |
1421 | possibility to have multiple conditions in routers. It will be great to also | |
1422 | be able to set variables in routers like in acl's." This is effectively a | |
1423 | radical suggestion for a complete re-design, and is therefore BIG. | |
1424 | ------------------------------------------------------------------------------ | |
1425 | ||
e05f33e0 | 1426 | (223) 22-Dec-03 S Support SOA lookup in dnsdb lookups |
fb636a0f PH |
1427 | |
1428 | This could be like zns, and climb up the tree till it hits a zone. Would the | |
1429 | name of the zone be required? | |
e05f33e0 PH |
1430 | ------------------------------------------------------------------------------ |
1431 | ||
1432 | (225) 22-Dec-03 M Add acl= to routers | |
1433 | ||
1434 | This would use an ACL to "control access" to a router, opening up a number | |
1435 | of interesting possibilities. Details of possible limitations need to be | |
1436 | investigated. | |
1437 | ------------------------------------------------------------------------------ | |
1438 | ||
1439 | (226) 23-Dec-03 S A way of treating DEFER as fail in dnsdb lookups | |
1440 | ||
1441 | (i.e. the dnsdb lookup failed, so accept the message) | |
1442 | ------------------------------------------------------------------------------ | |
1443 | ||
1444 | (227) 30-Jan-04 M A configuration .if facility | |
1445 | ||
1446 | "Second with the .ifdef and such, it would be nice to have a base .if, | |
1447 | so I could do something like | |
1448 | .if DEFINED_DATA == xyz | |
1449 | configuration here | |
1450 | .elseif DEFINED_DATA == abc | |
1451 | configuration here | |
1452 | .else | |
1453 | configuration here | |
1454 | .endif | |
1455 | also this would be nice at least in my case in the system filters, but | |
1456 | isn't required but you could pass the defined data to the system, in | |
1457 | variables." | |
1458 | ------------------------------------------------------------------------------ | |
1459 | ||
1460 | (229) 30-Jan-04 M New expansion mechanism: {list ...} | |
1461 | ||
1462 | "Proposed syntax: {list {separator}{item}{item}...} | |
1463 | This first expands the contents of {separator} and all of the {item}s, | |
1464 | then constructs a separator-delimited list. The twist is: if an {item} | |
1465 | generates the empty string, no separator will be generated for it. | |
1466 | The entire construct will fail is {separator} fails, or all {item}s | |
1467 | fail. If just some {item}s fail, they will be treated as if they | |
1468 | generated empty strings. | |
1469 | Examples: | |
1470 | {list {,}{aaaaaa}{bbbbbb}{cccccc}} -> aaaaaa,bbbbbb,cccccc | |
1471 | {list {,}{:fail:}{bbbbbb}{cccccc}} -> bbbbbb,cccccc | |
1472 | {list {,}{aaaaaa}{:fail:}{cccccc}} -> aaaaaa,cccccc | |
1473 | {list { }{aaaaaa}{bbbbbb}{}} -> aaaaaa bbbbbb | |
1474 | {list { }{:fail:}{:fail:}{:fail:}} -> :fail: | |
1475 | {list {:fail:}{aaaaa}{bbbb}{cccc}} -> :fail: | |
1476 | See particularly examples 2-4, which handle the case of a missing first | |
1477 | and last item with ease; doing this using {if ...} would be quite difficult!" | |
1478 | ------------------------------------------------------------------------------ | |
1479 | ||
1480 | (230) 30-Jan-04 M Find IP addresses of a domain's nameservers | |
1481 | ||
1482 | This needs some way of processing a list of things in a similar way, which | |
fc9c2317 PH |
1483 | should perhaps be a more general facility. // This can now be done using the |
1484 | list facilities of dnsdb; verbose, but it can be done. // | |
e05f33e0 PH |
1485 | ------------------------------------------------------------------------------ |
1486 | ||
1487 | (231) 30-Jan-04 ? -C has a number of problems when used for real | |
1488 | ||
1489 | -C was intended for testing; people are using it for "alternate" | |
1490 | configurations, and it doesn't work too well. Can a better way of doing this be | |
1491 | invented? | |
1492 | ------------------------------------------------------------------------------ | |
1493 | ||
1494 | (232) 02-Feb-04 ? Make parts of the code loadable | |
1495 | ||
1496 | The idea being that drivers, etc. could be compiled separately. There are, of | |
1497 | course, security issues. This is not something I want to go into at present. | |
1498 | ------------------------------------------------------------------------------ | |
1499 | ||
1500 | (235) 02-Feb-04 T Make smtp_accept_count available as a variable | |
1501 | ||
1502 | This is for use in ACLs. Of course, it is a snapshot of the count at the | |
fc9c2317 PH |
1503 | start of the receiving process. As such, it could be confusing because if a |
1504 | connection lasts a long time, the "true" value could be very different. For | |
1505 | this reason, I don't really like this idea. | |
e05f33e0 PH |
1506 | ------------------------------------------------------------------------------ |
1507 | ||
1508 | (236) 02-Feb-04 S String in local_scan that's added to the binary version string | |
1509 | ------------------------------------------------------------------------------ | |
1510 | ||
1511 | (237) 02-Feb-04 M Add_header in ACLs because "message" is overloaded | |
1512 | ||
4990831e PH |
1513 | This would be useful for verbs where "message" is an error message. See also |
1514 | 333. | |
e05f33e0 PH |
1515 | ------------------------------------------------------------------------------ |
1516 | ||
1517 | (238) 05-Feb-04 S ${address to handle multiple addresses | |
1518 | ||
1519 | At present, ${address expects to see just one address. An extension would let | |
1520 | it handle header lines with multiple addresses, just retaining the actual | |
1521 | addresses. Or perhaps a new operator is needed? | |
1522 | ------------------------------------------------------------------------------ | |
1523 | ||
1524 | (239) 23-Feb-04 ? Expansion items for encryption/decryption | |
1525 | ||
1526 | Perhaps for some kind of cookie handling? This would need an external crypto | |
1527 | library, because there's no crypto code in Exim itself. | |
1528 | ------------------------------------------------------------------------------ | |
1529 | ||
1530 | (240) 23-Feb-04 ? Some way to know if a ip is a mx for a given domain | |
1531 | ||
1532 | Some kind of iterative operation for dnsdb might be a general way of providing | |
fc9c2317 PH |
1533 | this. // This can now be done using the list facilities of dnsdb; verbose, but |
1534 | it can be done. // | |
e05f33e0 PH |
1535 | ------------------------------------------------------------------------------ |
1536 | ||
1537 | (242) 01-Mar-04 ? Run a filter from an expansion condition | |
1538 | ||
1539 | This would add a lot of power to ACLs, but its implementation might be tricky | |
1540 | because of the possibility of recursion. | |
1541 | ------------------------------------------------------------------------------ | |
1542 | ||
1543 | (243) 01-Mar-04 ? Run an ACL from an expansion condition | |
1544 | ||
1545 | The problem here is knowing what data is available at an arbitrary time. | |
1546 | ------------------------------------------------------------------------------ | |
1547 | ||
1548 | (244) 01-Mar-04 ? Add an on-success event to transports | |
1549 | ||
1550 | This could just be an expansion string, whose value is either ignored or | |
1551 | logged, but it could be used to run SQL updates or run programs etc. | |
1552 | However, what is "success" when a transport has multiple recipients? | |
1553 | ------------------------------------------------------------------------------ | |
1554 | ||
1555 | (245) 01-Mar-04 M Add all the string expansion conditions to filters | |
1556 | ||
1557 | Some thought would be needed on how to design the syntax for this. | |
1558 | ------------------------------------------------------------------------------ | |
1559 | ||
1560 | (247) 09-Mar-04 S IP addresses that are never looked up | |
1561 | ||
1562 | It would be nice if we could prevent this for certain IP addresses for | |
1563 | which we _know_ we'll never get a valid PTR record, like 2002::/16. | |
1564 | So a new option might reasonably default to: | |
1565 | ||
1566 | hosts_never_lookup = <; 2002::/16 | |
1567 | ------------------------------------------------------------------------------ | |
1568 | ||
1569 | (253) 05-Apr-04 M Use ESMTP and TLS for recipient callout verification | |
1570 | ||
1571 | The best way to do this would involve quite a bit of refactoring so as to | |
1572 | abstract some of the code from the smtp transport into subroutines that could | |
1573 | also be used from the callout code. The tls parameters should probably be | |
1574 | taken from the transport. That might also require some substantial code | |
1575 | refactoring. See also 294. | |
1576 | ------------------------------------------------------------------------------ | |
1577 | ||
1578 | (260) 30-Apr-04 S Respect +tls_cipher +tls_peerdn in rejectlog entries | |
1579 | ||
1580 | ------------------------------------------------------------------------------ | |
1581 | ||
1582 | (261) 05-May-04 S Add a "required_version" option | |
1583 | ||
1584 | So that configurations can insist on a specific Exim version. | |
1585 | ------------------------------------------------------------------------------ | |
1586 | ||
1587 | (262) 10-May-04 S Add "scratch" ACL variables | |
1588 | ||
1589 | The idea is for variables that are flushed at the start of each ACL. I'm not | |
1590 | really convinced that these are worth implementing. | |
1591 | ------------------------------------------------------------------------------ | |
1592 | ||
1593 | (263) 10-May-04 S Add variable $router_name $transport_name | |
1594 | ||
1595 | These could be used in debug_print settings, which are output during -bt, and | |
1596 | thus don't need the privilege to run with -d. | |
1597 | ------------------------------------------------------------------------------ | |
1598 | ||
1599 | (265) 25-May-04 M An init.d script for exim is needed | |
1600 | ||
1601 | The old sendmail script used to "just work" because it just did -bd -q 20m or | |
1602 | whatever. Newer versions start more than one sendmail daemon, so do not work. | |
1603 | ------------------------------------------------------------------------------ | |
1604 | ||
1605 | (267) 25-May-04 S tarpitting delay option | |
1606 | ||
1607 | A modifier that sets a delay between lines for multiline responses. | |
1608 | ------------------------------------------------------------------------------ | |
1609 | ||
1610 | (268) 25-May-04 S? Add a PID to every log line | |
1611 | ||
1612 | Given that pids are reused non-cyclically these days, is this actually useful? | |
1613 | ------------------------------------------------------------------------------ | |
1614 | ||
e05f33e0 PH |
1615 | (270) 01-Jun-04 M Add headers at top and middle |
1616 | ||
1617 | Various initiatives like SPF and DomainKeys require header lines to be added | |
1618 | above or in the middle of existing headers. Exim always adds at the bottom. | |
1619 | When these requirements are more standard and clearer, some way of controlling | |
1620 | where header lines are added will probably become necessary. Some new syntax | |
1621 | will be required. | |
1622 | ||
1623 | This can now be done fairly generally from local_scan(), and at the start and | |
4990831e | 1624 | after the Received: block from an ACL. Is anything more needed? See also 333. |
e05f33e0 PH |
1625 | ------------------------------------------------------------------------------ |
1626 | ||
1627 | (271) 02-Jun-04 L Callouts at routing time | |
1628 | ||
1629 | From a user's message: | |
1630 | ||
1631 | > I would like to be able to: | |
1632 | >[...] | |
1633 | > 2) Forcing callouts as address verification at router level | |
1634 | > [ check_callout just like check_local_user ] | |
1635 | > | |
1636 | > I would like to redirect messages in some domain to "domain with callout | |
1637 | > verification" and to "domain without callout verification" | |
1638 | > | |
1639 | > e.g. | |
1640 | > userA@domain.in -> userX@doamin.out-verify (use callout to verify) | |
1641 | > userB@domain.in -> userY@doamin.out-noverify (do not use callout verify) | |
1642 | > | |
1643 | > [both out-* domains delivered via "callout ready" transports] | |
1644 | ||
1645 | Other versions of the wish: | |
1646 | * limiting callouts in acls to specific transport | |
1647 | verify = recipient/callout=5s,transport:intranet_smtp | |
1648 | * adding "select transport" to ACL conditions | |
1649 | accept domains = +local_domains | |
1650 | transport = cyrus_ltcp | |
1651 | verify = recipient/callout=5s | |
1652 | ------------------------------------------------------------------------------ | |
1653 | ||
1654 | (272) 07-Jun-04 S Expand hosts_randomize | |
1655 | ||
1656 | It occurs in manualroute and in smtp. | |
1657 | ------------------------------------------------------------------------------ | |
1658 | ||
1659 | (278) 21-Jun-04 M quota_warn_message_file option | |
1660 | ||
1661 | Similar to the bounce and delivery warn message files. | |
1662 | ------------------------------------------------------------------------------ | |
1663 | ||
1664 | (280) 23-Jun-04 M A way of adding a header line after callout defer_ok | |
1665 | ||
1666 | This would record that, e.g., a sender domain verified, but the callout | |
fb636a0f PH |
1667 | could not be done. There are ways of fudging this, using ACL variables and |
1668 | "warn" statements. | |
e05f33e0 PH |
1669 | ------------------------------------------------------------------------------ |
1670 | ||
1671 | (285) 16-Jul-04 M Separate and independent log_selector for rejectlog | |
1672 | ||
1673 | For example: mainlog_selector and rejectlog_selector, with log_selector setting | |
1674 | both of them. | |
1675 | ------------------------------------------------------------------------------ | |
1676 | ||
1677 | (286) 21-Jul-04 M Distinguishing a larger number of errors | |
1678 | ||
1679 | For instance, detecting "connection reset by peer" (ENETRESET or ECONNRESET) | |
1680 | might be useful. | |
1681 | ------------------------------------------------------------------------------ | |
1682 | ||
1683 | (288) 10-Aug-04 M Option for verify to require MX | |
1684 | ||
1685 | e.g. verify=sender/require_mx | |
1686 | I'm not too keen because this is rather special purpose, and of course could | |
1687 | only apply if the verification happened to hit a dnslookup router. | |
1688 | ------------------------------------------------------------------------------ | |
1689 | ||
1690 | (289) 10-Aug-04 L Option to treat defers in database lookups as "not found" | |
1691 | ||
1692 | This is so that alternatives can be coded for when databases are down. A | |
1693 | suggested patch has been sent, but it just catches all instances of "defer" | |
1694 | from a lookup in an expansion string. These can occur for a number of different | |
1695 | reasons, not just connection failures. I think that we need a specific | |
1696 | "connection failed" indicator. Also, what about lookups in lists? | |
1697 | ------------------------------------------------------------------------------ | |
1698 | ||
1699 | (291) 13-Aug-04 M An ACL or "local_scan()" to be run on size excession | |
1700 | ||
1701 | The idea is to give something a chance to look at the data so far received when | |
1702 | more than message_size_limit (or some other limit) has arrived. I am not sure | |
1703 | how useful this would actually be in practice. | |
1704 | ------------------------------------------------------------------------------ | |
1705 | ||
1706 | (292) 13-Aug-04 M Overall timeout for message reception | |
1707 | ||
1708 | A client could in priciple keep an SMTP connection open for a very long time by | |
1709 | trickling in data very slowly. Also, after message_size_limit is exceeded, Exim | |
1710 | continues to swallow the data (though it does not write it to disk) until the | |
1711 | end is reached. Again, the connection could be held open for a very long time. | |
1712 | Some kind of overall time limit for an SMTP connection, possibly reset at the | |
1713 | start of each message, might be helpful in these situations. | |
1714 | ------------------------------------------------------------------------------ | |
1715 | ||
1716 | (294) 23-Aug-04 L Callouts and AUTH and LMTP | |
1717 | ||
1718 | People want to do callouts using LMTP as well as SMTP, and that would also | |
1719 | include sockets as well as TCP/IP connections. Also, people want to make use of | |
1720 | AUTH during the callout checking, on all types of connection. I suppose that | |
1721 | means making TLS available as well. This probably means a rewrite of the code | |
1722 | that actually does the callout. Should we use the relevant transport in a new | |
fdfdba09 | 1723 | "callout" mode instead of keeping things separate? See also 253 and 323. |
461f4862 PH |
1724 | |
1725 | And here's another submitted idea: "My actual suggestion is that if this model | |
1726 | is followed, the parent process doesn't have to stop the callout process if it | |
1727 | is taking too long to respond: it can return 450 to the incoming connection | |
1728 | within the 5 minute SMTP command timeout and leave the callout process to | |
1729 | continue, in the hope that it will eventually get a result and store it in the | |
1730 | callout cache in time for the sender's next attempt." | |
e05f33e0 PH |
1731 | ------------------------------------------------------------------------------ |
1732 | ||
1733 | (296) 09-Sep-04 S Make deliver_time work for == lines as well as => | |
1734 | ||
1735 | What about ** lines? | |
1736 | ------------------------------------------------------------------------------ | |
35f53bf6 | 1737 | |
35f53bf6 PH |
1738 | (299) 25-Oct-04 S Options to make Sieve "keep" pass to next router |
1739 | ||
1740 | Currently, "keep" saves in the mailbox. Probably need two options, for implicit | |
1741 | and explicit keep commands. | |
1742 | ------------------------------------------------------------------------------ | |
1743 | ||
0cf417c5 PH |
1744 | (301) 27-Oct-04 M Use an "ACL" to filter logging |
1745 | ||
1746 | This idea was for ACL syntax to be able to "accept" or "deny" individual log | |
1747 | lines. This would make it possible to have, for example, per-host logging for | |
1748 | certain things. See also 15 above. | |
1749 | ------------------------------------------------------------------------------ | |
32aaebb6 PH |
1750 | |
1751 | (302) 28-Oct-04 M Expand pass_router and redirect_router | |
1752 | ||
1753 | Doing this would mean postponing the validity checks till the router was | |
1754 | actually used instead of doing them at start up. It does not seem to be a | |
1755 | facility that will be widely used. | |
1756 | ------------------------------------------------------------------------------ | |
1757 | ||
1758 | (303) 28-Oct-04 M Support SQL relay | |
1759 | ||
1760 | This would make it easier for packagers to support "generic SQL" without having | |
1761 | to choose which one. It can be slotted in using a MySQL interface without | |
1762 | modifying Exim, but native support would be nice. | |
1763 | ------------------------------------------------------------------------------ | |
1764 | ||
1765 | (304) 02-Nov-04 M A way of seeing the whole message in Perl or ${run | |
1766 | ||
1767 | At present, the headers are available in $message_headers, but only part of | |
1768 | the body is visible. The only way to pass the whole body would be as a file | |
1769 | descriptor because it can be very large. See also (42). | |
1770 | ------------------------------------------------------------------------------ | |
1771 | ||
1772 | (305) 02-Nov-04 M A Perl transport | |
1773 | ||
1774 | The suggestion here is that an embedded Perl function takes responsibility for | |
1775 | doing the delivery. I am not at all keen on this. One way of doing it would be | |
1776 | to implement (244), which provides an "on success" string expansion. Then | |
1777 | anyone who wants this could run that on a transport that does nothing. | |
1778 | ------------------------------------------------------------------------------ | |
b5c45968 PH |
1779 | |
1780 | (306) 09-Nov-04 M Make the search type partial-lsearch*@ be useful | |
1781 | ||
1782 | At present, it treats the whole key as a domain for the partial search, then | |
1783 | does the *@ thing. A more sensible plan would be something like: | |
1784 | ||
1785 | user@company.com | |
1786 | *@company.com | |
1787 | user@*.company.com | |
1788 | *@*.company.com | |
1789 | * | |
1790 | ||
1791 | That is, try the local part and * at each of the partial domain values. | |
1792 | ------------------------------------------------------------------------------ | |
5b1fde4d PH |
1793 | |
1794 | (307) 24-Nov-04 S Check the syntax of Message-ID: header lines | |
1795 | ||
1796 | This could be added to "verify=header_syntax" or, if the incompatibility is | |
1797 | felt to be too great, an additional condition, or a sub-option, could be added. | |
1798 | ------------------------------------------------------------------------------ | |
908acc4e PH |
1799 | |
1800 | (308) 24-Nov-04 S Add $body_longlinecount and $header_longlinecount | |
1801 | ||
1802 | These variables would hold the number of physical lines in the body and header | |
1803 | that were longer than 998 bytes. This would be fiddly to implement because of | |
1804 | the way Exim currently reads the input. It isn't just a trivial patch. | |
1805 | ------------------------------------------------------------------------------ | |
a78fb8ef PH |
1806 | |
1807 | (309) 01-Dec-04 S/M Queue runners should get locks before forking | |
1808 | ||
1809 | If a queue-runner opened the -D file and took out the lock before forking, it | |
1810 | would waste fewer resources if the message was already being delivered. But how | |
1811 | often would this actually matter in practice? | |
1812 | ------------------------------------------------------------------------------ | |
fbbf1e99 PH |
1813 | |
1814 | (310) 06-Dec-04 S After "personal" save what matched | |
1815 | ||
1816 | The idea is to save the email address that actually was found in the message | |
1817 | in a variable so it can be used (e.g. as the From: address in an autoreply). | |
1818 | ------------------------------------------------------------------------------ | |
59e88703 PH |
1819 | |
1820 | (311) 07-Dec-04 ? More flexible SMTP response codes | |
1821 | ||
1822 | The requestor wanted to be able to specify, for example, 551 in an ACL deny | |
1823 | instead of 550, and also vary the defer code. The first digit, however, should | |
1824 | remain fixed. In addition to main codes, enhanced status codes (RFC 2034) were | |
1825 | requested. (As far as I can tell, they have never been highly popular.) | |
1826 | ------------------------------------------------------------------------------ | |
f7b63901 PH |
1827 | |
1828 | (312) 10-Dec-04 ? Shadow remote transports | |
1829 | ||
1830 | Unless a lot of work is done, this would be restricted to another remote | |
1831 | transport. A similar effect could therefore be achieved with "shadow_hosts" | |
1832 | which are like fallback_hosts but which operate on success. | |
1833 | ------------------------------------------------------------------------------ | |
23fd96b1 PH |
1834 | |
1835 | (313) 21-Jan-05 ? Multiple queues | |
1836 | ||
1837 | Exim runs poorly if its queue gets too big. Various ways round this are all | |
1838 | to some extent kludges. There has been a suggestion of using multiple | |
1839 | directories instead of just "input". (Originally it was for a whole set of | |
1840 | spool directories, but that introduces complications with the hint files.) | |
1841 | On message arrival, somehow a selection of "input" must be made. Then queue | |
1842 | runners must be startable for the different "queues". Don't forget that the | |
1843 | "msglog" directory is also involved. Perhaps add a new level of indirection: | |
1844 | /var/spool/exim/queue1/{input,msglog}, /var/spool/exim/queue2/.... | |
1845 | ------------------------------------------------------------------------------ | |
7163d8cf PH |
1846 | |
1847 | (314) 15-Feb-05 M Multiple headers_{add,remove} for routers | |
1848 | ||
1849 | If headers_{add,remove} could be specified multiple times, it would be easier | |
4990831e PH |
1850 | for those people that construct configs using .ifdef or .include, etc. See also |
1851 | 333. | |
7163d8cf | 1852 | ------------------------------------------------------------------------------ |
54a4fbd5 PH |
1853 | |
1854 | (315) 15-Feb-05 M String variables for use in filters. | |
1855 | ||
1856 | Currently, only numerical variables are supported. | |
1857 | ------------------------------------------------------------------------------ | |
46c23dba PH |
1858 | |
1859 | (316) 21-Feb-05 M Put callout response into a variable | |
1860 | ||
1861 | When a callout fails, put the entire SMTP response into a variable. This is not | |
1862 | trivial because we probably should retain it in the cache as well. | |
1863 | ------------------------------------------------------------------------------ | |
a6c11ddf PH |
1864 | |
1865 | (317) 25-Feb-05 S Delete the pid file when the daemon exits | |
1866 | ||
1867 | At least try to catch some of the exit routes from the daemon and either delete | |
1868 | or empty the pid file. | |
1869 | ------------------------------------------------------------------------------ | |
09a23feb | 1870 | |
6758c780 | 1871 | (318) 02-Mar-05 S Add current connection count to daemon's exiwhat output |
09a23feb | 1872 | ------------------------------------------------------------------------------ |
6758c780 PH |
1873 | |
1874 | (319) 03-Mar-05 ? Allow file rather than directory for scanning call | |
1875 | ||
1876 | "I can call arbitrary scanning software by specifying the full path. I can pass | |
1877 | a directory to be scanned in the arguments. I'd like to be able to pass a | |
1878 | specific file name instead of a directory. I think this would allow me to call | |
1879 | Bogofilter at smtp time. Bogofilter requires a filename, not a directory. The | |
1880 | file would contain the complete email. I suppose there may be other scanning | |
1881 | solutions with a similar requirement." | |
1882 | ------------------------------------------------------------------------------ | |
1883 | ||
1884 | (320) 03-Mar-05 T Options to control daemon retry binding | |
1885 | ||
1886 | Currently the daemon tries 10 times at 30-second intervals to listen on an IP | |
1887 | address. The wish is for options to control these numbers. | |
1888 | ------------------------------------------------------------------------------ | |
45b1794b PH |
1889 | |
1890 | (321) 07-Mar-05 S Run an ACL on a sync error | |
1891 | ||
1892 | ... and possibly "accept" or "deny" it. | |
1893 | ------------------------------------------------------------------------------ | |
596875b3 PH |
1894 | |
1895 | (322) 15-Mar-05 M Add a /defer_ok option to verify=reverse_host_lookup | |
1896 | ------------------------------------------------------------------------------ | |
fdfdba09 PH |
1897 | |
1898 | (323) 15-Mar-05 M Make callouts use smtp_data from the smtp transport | |
1899 | ||
1900 | This is yet another problem caused by duplicating the SMTP code between the | |
1901 | transport and the callout verification. See item 294 above. Merging the | |
1902 | transport and the callout code could prevent this kind of thing from happening. | |
1903 | ------------------------------------------------------------------------------ | |
fb6f3d5c PH |
1904 | |
1905 | (324) 04-Apr-05 ? Make -bP show ACLs | |
1906 | ||
1907 | This is in the Bugzilla as #10. | |
1908 | ------------------------------------------------------------------------------ | |
4e714aed PH |
1909 | |
1910 | (325) 28-Apr-05 ? Support for quotas over 2G in appendfile. | |
1911 | ||
1912 | Things get bigger far more quickly than I ever imagine... | |
1913 | ------------------------------------------------------------------------------ | |
f331f3b6 PH |
1914 | |
1915 | (326) 03-May-05 ? Queue-only on memory shortage | |
1916 | ||
1917 | This is bugzilla #17. The idea is to have something like queue_only_load that | |
1918 | triggers on a shortage of main memory. | |
1919 | ------------------------------------------------------------------------------ | |
f0884f39 PH |
1920 | |
1921 | (327) 06-May-05 ? Break delay if connection drops | |
1922 | ||
1923 | Currently, "delay=5m" (e.g.) waits for 5 minutes. If we can detect that the | |
1924 | connection has died in the meantime, it would make sense to break the delay. | |
ec798043 PH |
1925 | However, it doesn't seem possible to detect a dropped connection without trying |
1926 | to read from it. | |
f0884f39 | 1927 | ------------------------------------------------------------------------------ |
22907b39 | 1928 | |
c9f149f5 | 1929 | (328) 10-May-05 S After "unseen" routing, pass on header additions/deletions |
22907b39 PH |
1930 | |
1931 | Currently, when an "unseen" router accepts an address, header additions and | |
1932 | deletions stick with that address, and the "clone" address that continues to be | |
1933 | routed starts off without any additions or removals. This request is for an | |
1934 | option to select other actions: retain header actions with the clone only, or | |
4990831e | 1935 | pass them on to both addresses. See also 333. |
22907b39 | 1936 | ------------------------------------------------------------------------------ |
c9f149f5 PH |
1937 | |
1938 | (329) 12-May-05 S Create message ID at MAIL FROM time | |
1939 | ||
1940 | Currently, the ID is created only when Exim is about to create the data (-D) | |
1941 | file for an incoming message. In other words, after it knows it really is going | |
1942 | to accept the message. Creating the ID earlier would mean that rejection | |
1943 | messages in the log would be tagged with an ID, and this is seen as desirable | |
1944 | by some people. | |
1945 | ------------------------------------------------------------------------------ | |
ec798043 PH |
1946 | |
1947 | (330) 31-May-05 ? Default interface for -bh and default port for -oMi | |
1948 | ||
1949 | I do not think it worth putting effort in here for these reasons: If a host has | |
1950 | multiple interfaces, there's no easy way to choose one to be the default for | |
1951 | $interface_address when -bh is used. If the host does not have multiple | |
1952 | interfaces, chances are the configuration won't be looking at | |
1953 | $interface_address anyway. If you are setting -oMi, and care about the port, it | |
1954 | isn't much effort to tack on a port number, though in this case, I suppose a | |
1955 | default of 25 is "obvious". | |
1956 | ------------------------------------------------------------------------------ | |
1957 | ||
1958 | (331) 31-May-05 M More than one retry time per host | |
1959 | ||
1960 | Consider this example: an attempt to start a TLS connection to a host gets a | |
1961 | temporary error. This stops *all* connections, both for TLS and otherwise. | |
1962 | Different retry times for different circumstances are needed to get round this. | |
1963 | What are the circumstances? TLS/not-TLS is clearly one, but sometimes you don't | |
1964 | know if you are going to try TLS until you have connected. So this makes sense | |
1965 | only if require_tls is used. Perhaps the multiple retry times should just be | |
1966 | per-transport, to avoid these difficulties. If we made all retry keys depend on | |
1967 | the transport, this would happen automatically. | |
1968 | ------------------------------------------------------------------------------ | |
857c3b3f PH |
1969 | |
1970 | (332) 03-Jun-05 S A "receive time taken" log selector | |
1971 | ||
1972 | This suggestion is to at an RT= item to the <= line, giving the time it | |
1973 | actually took to receive the message. | |
1974 | ------------------------------------------------------------------------------ | |
4990831e PH |
1975 | |
1976 | (333) 06-Jun-05 L Re-think and re-implement header handling | |
1977 | ||
1978 | There are a number of items related to headers above. Better facilities for | |
1979 | handling headers at ACL time are needed. The whole way in which Exim handles | |
1980 | headers should be re-planned and re-implemented in a more consistent manner. | |
1981 | ||
1982 | These are the main previous items: | |
1983 | ||
1984 | Exim 3 Wish List: 41, 85, 149, 187. | |
1985 | Exim 4 Wish List: 55, 62, 63, 160, 212, 237, 270, 314, 328. | |
1986 | ------------------------------------------------------------------------------ | |
1987 | --- HWM 333 ------------------------------------------------------------------ | |
e05f33e0 | 1988 | ---------------------------- End of WishList --------------------------------- |