Change host_lookup re-forward from byname to bydns; checking DNSSEC

[exim.git] / doc / doc-txt / experimental-spec.txt

diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt
index 234bac0ab3e16503d2cb3108b3006473f33a51cc..64916e4a9e3403351816a5c25488c2339014b8a6 100644 (file)
--- a/doc/doc-txt/experimental-spec.txt
+++ b/doc/doc-txt/experimental-spec.txt
@@ -1271,8 +1271,9 @@ $tls_out_tlsa_usage (detailed above).
 
 
 
-SMTPUTF8
+INTERNATIONAL
 ------------------------------------------------------------
+SMTPUTF8
 Internationalised mail name handling.
 RFCs 6530, 6533, 5890
 
@@ -1299,6 +1300,9 @@ the appendfile transport, will have utf8 name.
 Helo names sent by the smtp transport will have any utf8
 components expanded to a-label form.
 
+Any certificate name checks will be done using the a-label
+form of the name.
+
 Log lines and Received-by: header lines will aquire a "utf8"
 prefix on the protocol element, eg. utf8esmtp.
 
@@ -1318,12 +1322,51 @@ by "control = utf8_downconvert/0".  The value "-1"
 may also be used, to use a-label for only if the
 destination host does not support SMTPUTF8.
 
+If mua_wrapper is set, the utf8_downconvert control
+defaults to -1 (convert if needed).
+
+
+There is no explicit support for VRFY and EXPN.
+Configurations supporting these should inspect
+$smtp_command_argument for an SMTPUTF8 argument.
+
+There is no support for LMTP on Unix sockets.
+Using the "lmtp" protocol option on an smtp transport,
+for LMTP over TCP, should work as expected.
+
 Known issues:
- - Currently LMTP is not supported.
  - DSN unitext handling is not present
- - no provision for converting logging from UTF-8
- - VRFY and EXPN not handled
- - mua_wrapper not handled
+ - no provision for converting logging from or to UTF-8
+
+----
+IMAP folder names
+
+New expansion operator:
+
+${imapfolder {<string>} {<sep>} {<specials>}}
+
+The string is converted from the charset specified by the headers charset 
+command (in a filter file) or headers_charset global option, to the
+modified UTF-7 encoding specified by RFC 2060, with the following
+exception: All occurences of <sep> (which has to be a single character)
+are replaced with periods ("."), and all periods and slashes that aren't
+<sep> and are not in the <specials> string are BASE64 encoded.
+
+The third argument can be omitted, defaulting to an empty string.
+The second argument can be omitted, defaulting to "/".
+
+This is the encoding used by Courier for Maildir names on disk, and followed
+by many other IMAP servers.
+
+   Example 1: ${imapfolder {Foo/Bar}}       yields "Foo.Bar".
+   Example 2: ${imapfolder {Foo/Bar}{.}{/}} yields "Foo&AC8-Bar".
+   Example 3: ${imapfolder {Räksmörgås}}    yields "R&AOQ-ksm&APY-rg&AOU-s".
+
+Note that the source charset setting is vital, and also that characters
+must be representable in UTF-16.
+
+
+
 
 --------------------------------------------------------------
 End of file