1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* See the file NOTICE for conditions of use and distribution. */
8 /* Almost all the global variables are defined together in this one header, so
9 that they are easy to find. However, those that are visible during the
10 compilation of the local_scan() function are defined separately in the
11 local_scan.h header file. */
13 /* First put any specials that are required for some operating systems. */
19 /* We need to be careful about width of int and atomicity in signal handlers,
20 especially with the rise of 64-bit systems breaking older assumptions. But
21 sig_atomic_t comes from signal.h so can't go into mytypes.h without including
22 signal support in local_scan, which seems precipitous. */
23 typedef volatile sig_atomic_t SIGNAL_BOOL
;
25 /* Now things that are present only when configured. */
28 extern uschar
*opt_perl_startup
; /* Startup code for Perl interpreter */
29 extern BOOL opt_perl_at_start
; /* Start Perl interpreter at start */
30 extern BOOL opt_perl_started
; /* Set once interpreter started */
31 extern BOOL opt_perl_taintmode
; /* Enable taint mode in Perl */
35 extern tree_node
*dlobj_anchor
; /* Tree of dynamically-loaded objects */
39 extern uschar
*ibase_servers
;
43 extern uschar
*eldap_ca_cert_dir
; /* Directory with CA certificates */
44 extern uschar
*eldap_ca_cert_file
; /* CA certificate file */
45 extern uschar
*eldap_cert_file
; /* Certificate file */
46 extern uschar
*eldap_cert_key
; /* Certificate key file */
47 extern uschar
*eldap_cipher_suite
; /* Allowed cipher suite */
48 extern uschar
*eldap_default_servers
; /* List of default servers */
49 extern uschar
*eldap_require_cert
; /* Peer certificate checking strategy */
50 extern BOOL eldap_start_tls
; /* Use STARTTLS */
51 extern int eldap_version
; /* LDAP version */
55 extern uschar
*mysql_servers
; /* List of servers and connect info */
59 extern uschar
*oracle_servers
; /* List of servers and connect info */
63 extern uschar
*pgsql_servers
; /* List of servers and connect info */
67 extern uschar
*redis_servers
; /* List of servers and connect info */
71 extern int sqlite_lock_timeout
; /* Internal lock waiting timeout */
74 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
75 extern BOOL move_frozen_messages
; /* Get them out of the normal directory */
78 /* These variables are outside the #ifdef because it keeps the code less
79 cluttered in several places (e.g. during logging) if we can always refer to
80 them. Also, the tls_ variables are now always visible. */
83 client_conn_ctx active
; /* fd/socket when in a TLS session, and ptr to TLS context */
84 int bits
; /* bits used in TLS session */
85 BOOL certificate_verified
; /* Client certificate verified */
87 BOOL dane_verified
; /* ... via DANE */
88 int tlsa_usage
; /* TLSA record(s) usage */
90 uschar
*cipher
; /* Cipher used */
91 const uschar
*cipher_stdname
; /* Cipher used, RFC version */
93 BOOL on_connect
; /* For older MTAs that don't STARTTLS */
94 uschar
*on_connect_ports
; /* Ports always tls-on-connect */
95 void *ourcert
; /* Certificate we presented, binary */
96 void *peercert
; /* Certificate of peer, binary */
97 uschar
*peerdn
; /* DN from peer */
98 uschar
*sni
; /* Server Name Indication */
100 OCSP_NOT_REQ
=0, /* not requested */
101 OCSP_NOT_RESP
, /* no response to request */
102 OCSP_VFY_NOT_TRIED
, /* response not verified */
103 OCSP_FAILED
, /* verify failed */
104 OCSP_VFIED
/* verified */
105 } ocsp
; /* Stapled OCSP status */
106 #ifdef EXPERIMENTAL_TLS_RESUME
107 unsigned resumption
; /* Session resumption */
108 BOOL host_resumable
:1;
109 BOOL ticket_received
:1;
112 extern tls_support tls_in
;
113 extern tls_support tls_out
;
116 extern BOOL gnutls_compat_mode
; /* Less security, more compatibility */
117 extern BOOL gnutls_allow_auto_pkcs11
; /* Let GnuTLS autoload PKCS11 modules */
118 extern uschar
*openssl_options
; /* OpenSSL compatibility options */
119 extern const pcre
*regex_STARTTLS
; /* For recognizing STARTTLS settings */
120 extern uschar
*tls_certificate
; /* Certificate file */
121 extern uschar
*tls_channelbinding_b64
; /* string of base64 channel binding */
122 extern uschar
*tls_crl
; /* CRL File */
123 extern int tls_dh_max_bits
; /* don't accept higher lib suggestions */
124 extern uschar
*tls_dhparam
; /* DH param file */
125 extern uschar
*tls_eccurve
; /* EC curve */
126 # ifndef DISABLE_OCSP
127 extern uschar
*tls_ocsp_file
; /* OCSP stapling proof file */
129 extern uschar
*tls_privatekey
; /* Private key file */
130 extern BOOL tls_remember_esmtp
; /* For YAEB */
131 extern uschar
*tls_require_ciphers
; /* So some can be avoided */
132 # ifdef EXPERIMENTAL_TLS_RESUME
133 extern uschar
*tls_resumption_hosts
; /* TLS session resumption */
135 extern uschar
*tls_try_verify_hosts
; /* Optional client verification */
136 extern uschar
*tls_verify_certificates
;/* Path for certificates to check */
137 extern uschar
*tls_verify_hosts
; /* Mandatory client verification */
139 extern uschar
*tls_advertise_hosts
; /* host for which TLS is advertised */
141 extern uschar
*dsn_envid
; /* DSN envid string */
142 extern int dsn_ret
; /* DSN ret type*/
143 extern const pcre
*regex_DSN
; /* For recognizing DSN settings */
144 extern uschar
*dsn_advertise_hosts
; /* host for which TLS is advertised */
146 /* Input-reading functions for messages, so we can use special ones for
149 extern int (*lwr_receive_getc
)(unsigned);
150 extern uschar
* (*lwr_receive_getbuf
)(unsigned *);
151 extern int (*lwr_receive_ungetc
)(int);
152 extern int (*receive_getc
)(unsigned);
153 extern uschar
* (*receive_getbuf
)(unsigned *);
154 extern void (*receive_get_cache
)(void);
155 extern int (*receive_ungetc
)(int);
156 extern int (*receive_feof
)(void);
157 extern int (*receive_ferror
)(void);
158 extern BOOL (*receive_smtp_buffered
)(void);
161 /* For clearing, saving, restoring address expansion variables. We have to have
162 the size of this vector set explicitly, because it is referenced from more than
165 extern const uschar
**address_expansions
[ADDRESS_EXPANSIONS_COUNT
];
167 /* Flags for which we don't need an address ever so can use a bitfield */
169 extern struct global_flags
{
170 BOOL acl_temp_details
:1; /* TRUE to give details for 4xx error */
171 BOOL active_local_from_check
:1; /* For adding Sender: (switchable) */
172 BOOL active_local_sender_retain
:1; /* For keeping Sender: (switchable) */
173 BOOL address_test_mode
:1; /* True for -bt */
174 BOOL admin_user
:1; /* True if caller can do admin */
175 BOOL allow_auth_unadvertised
:1; /* As it says */
176 BOOL allow_unqualified_recipient
:1; /* For local messages */ /* As it says */
177 BOOL allow_unqualified_sender
:1; /* Reset for SMTP */ /* Ditto */
178 BOOL authentication_local
:1; /* TRUE if non-smtp (implicit authentication) */
180 BOOL background_daemon
:1; /* Set FALSE to keep in foreground */
182 BOOL chunking_offered
:1;
183 BOOL config_changed
:1; /* True if -C used */
184 BOOL continue_more
:1; /* Flag more addresses waiting */
186 BOOL daemon_listen
:1; /* True if listening required */
187 BOOL debug_daemon
:1; /* Debug the daemon process only */
188 BOOL deliver_firsttime
:1; /* True for first delivery attempt */
189 BOOL deliver_force
:1; /* TRUE if delivery was forced */
190 BOOL deliver_freeze
:1; /* TRUE if delivery is frozen */
191 BOOL deliver_force_thaw
:1; /* TRUE to force thaw in queue run */
192 BOOL deliver_manual_thaw
:1; /* TRUE if manually thawed */
193 BOOL deliver_selectstring_regex
:1; /* String is regex */
194 BOOL deliver_selectstring_sender_regex
:1; /* String is regex */
195 BOOL disable_callout_flush
:1; /* Don't flush before callouts */
196 BOOL disable_delay_flush
:1; /* Don't flush before "delay" in ACL */
197 BOOL disable_logging
:1; /* Disables log writing when TRUE */
199 BOOL dkim_disable_verify
:1; /* Set via ACL control statement. When set, DKIM verification is disabled for the current message */
201 #ifdef EXPERIMENTAL_DMARC
202 BOOL dmarc_has_been_checked
:1; /* Global variable to check if test has been called yet */
203 BOOL dmarc_disable_verify
:1; /* Set via ACL control statement. When set, DMARC verification is disabled for the current message */
204 BOOL dmarc_enable_forensic
:1; /* Set via ACL control statement. When set, DMARC forensic reports are enabled for the current message */
206 BOOL dont_deliver
:1; /* TRUE for -N option */
207 BOOL dot_ends
:1; /* TRUE if "." ends non-SMTP input */
209 BOOL enable_dollar_recipients
:1; /* Make $recipients available */
210 BOOL expand_string_forcedfail
:1; /* TRUE if failure was "expected" */
212 BOOL filter_running
:1; /* TRUE while running a filter */
214 BOOL header_rewritten
:1; /* TRUE if header changed by router */
215 BOOL helo_verified
:1; /* True if HELO verified */
216 BOOL helo_verify_failed
:1; /* True if attempt failed */
217 BOOL host_checking_callout
:1; /* TRUE if real callout wanted */
218 BOOL host_find_failed_syntax
:1; /* DNS syntax check failure */
220 BOOL inetd_wait_mode
:1; /* Whether running in inetd wait mode */
221 BOOL is_inetd
:1; /* True for inetd calls */
223 BOOL local_error_message
:1; /* True if handling one of these */
224 BOOL log_testing_mode
:1; /* TRUE in various testing modes */
226 #ifdef WITH_CONTENT_SCAN
227 BOOL no_mbox_unspool
:1; /* don't unlink files in /scan directory */
229 BOOL no_multiline_responses
:1; /* For broken clients */
231 BOOL parse_allow_group
:1; /* Allow group syntax */
232 BOOL parse_found_group
:1; /* In the middle of a group */
233 BOOL pipelining_enable
:1; /* As it says */
234 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
235 BOOL proxy_session_failed
:1; /* TRUE if required proxy negotiation failed */
238 BOOL queue_2stage
:1; /* Run queue in 2-stage manner */
239 BOOL queue_only_policy
:1; /* ACL or local_scan wants queue_only */
240 BOOL queue_run_first_delivery
:1; /* If TRUE, first deliveries only */
241 BOOL queue_run_force
:1; /* TRUE to force during queue run */
242 BOOL queue_run_local
:1; /* Local deliveries only in queue run */
243 BOOL queue_running
:1; /* TRUE for queue running process and */
244 BOOL queue_smtp
:1; /* Disable all immediate SMTP (-odqs)*/
246 BOOL really_exim
:1; /* FALSE in utilities */
247 BOOL receive_call_bombout
:1; /* Flag for crashing log */
248 BOOL recipients_discarded
:1; /* By an ACL */
249 BOOL running_in_test_harness
:1; /*TRUE when running_status is patched */
251 BOOL search_find_defer
:1; /* Set TRUE if lookup deferred */
252 BOOL sender_address_forced
:1; /* Set by -f */
253 BOOL sender_host_notsocket
:1; /* Set for -bs and -bS */
254 BOOL sender_host_unknown
:1; /* TRUE for -bs and -bS except inetd */
255 BOOL sender_local
:1; /* TRUE for local senders */
256 BOOL sender_name_forced
:1; /* Set by -F */
257 BOOL sender_set_untrusted
:1; /* Sender set by untrusted caller */
258 BOOL smtp_authenticated
:1; /* Sending client has authenticated */
259 #ifdef EXPERIMENTAL_PIPE_CONNECT
260 BOOL smtp_in_early_pipe_advertised
:1; /* server advertised PIPE_CONNECT */
261 BOOL smtp_in_early_pipe_no_auth
:1; /* too many authenticator names */
262 BOOL smtp_in_early_pipe_used
:1; /* client did send early data */
264 BOOL smtp_in_pipelining_advertised
:1; /* server advertised PIPELINING */
265 BOOL smtp_in_pipelining_used
:1; /* server noted client using PIPELINING */
266 BOOL spool_file_wireformat
:1; /* current -D file has CRLF rather than NL */
267 BOOL submission_mode
:1; /* Can be forced from ACL */
268 BOOL suppress_local_fixups
:1; /* Can be forced from ACL */
269 BOOL suppress_local_fixups_default
:1; /* former is reset to this; override with -G */
270 BOOL synchronous_delivery
:1; /* TRUE if -odi is set */
271 BOOL system_filtering
:1; /* TRUE when running system filter */
273 BOOL tcp_fastopen_ok
:1; /* appears to be supported by kernel */
274 BOOL tcp_in_fastopen
:1; /* conn usefully used fastopen */
275 BOOL tcp_in_fastopen_data
:1; /* fastopen carried data */
276 BOOL tcp_in_fastopen_logged
:1; /* one-time logging */
277 BOOL tcp_out_fastopen_logged
:1; /* one-time logging */
278 BOOL timestamps_utc
:1; /* Use UTC for all times */
279 BOOL transport_filter_timed_out
:1; /* True if it did */
280 BOOL trusted_caller
:1; /* Caller is trusted */
281 BOOL trusted_config
:1; /* Configuration file is trusted */
285 /* General global variables */
287 extern BOOL accept_8bitmime
; /* Allow *BITMIME incoming */
288 extern uschar
*add_environment
; /* List of environment variables to add */
289 extern header_line
*acl_added_headers
; /* Headers added by an ACL */
290 extern tree_node
*acl_anchor
; /* Tree of named ACLs */
291 extern uschar
*acl_arg
[9]; /* Argument to ACL call */
292 extern int acl_narg
; /* Number of arguments to ACL call */
293 extern int acl_level
; /* Nesting depth and debug indent */
294 extern uschar
*acl_not_smtp
; /* ACL run for non-SMTP messages */
295 #ifdef WITH_CONTENT_SCAN
296 extern uschar
*acl_not_smtp_mime
; /* For MIME parts of ditto */
298 extern uschar
*acl_not_smtp_start
; /* ACL run at the beginning of a non-SMTP session */
299 extern uschar
*acl_removed_headers
; /* Headers deleted by an ACL */
300 extern uschar
*acl_smtp_auth
; /* ACL run for AUTH */
301 extern uschar
*acl_smtp_connect
; /* ACL run on SMTP connection */
302 extern uschar
*acl_smtp_data
; /* ACL run after DATA received */
304 extern uschar
*acl_smtp_data_prdr
; /* ACL run after DATA received if in PRDR mode*/
305 const extern pcre
*regex_PRDR
; /* For recognizing PRDR settings */
308 extern uschar
*acl_smtp_dkim
; /* ACL run for DKIM signatures / domains */
310 extern uschar
*acl_smtp_etrn
; /* ACL run for ETRN */
311 extern uschar
*acl_smtp_expn
; /* ACL run for EXPN */
312 extern uschar
*acl_smtp_helo
; /* ACL run for HELO/EHLO */
313 extern uschar
*acl_smtp_mail
; /* ACL run for MAIL */
314 extern uschar
*acl_smtp_mailauth
; /* ACL run for MAIL AUTH */
315 #ifdef WITH_CONTENT_SCAN
316 extern uschar
*acl_smtp_mime
; /* ACL run after DATA, before acl_smtp_data, for each MIME part */
318 extern uschar
*acl_smtp_notquit
; /* ACL run for disconnects */
319 extern uschar
*acl_smtp_predata
; /* ACL run for DATA command */
320 extern uschar
*acl_smtp_quit
; /* ACL run for QUIT */
321 extern uschar
*acl_smtp_rcpt
; /* ACL run for RCPT */
322 extern uschar
*acl_smtp_starttls
; /* ACL run for STARTTLS */
323 extern uschar
*acl_smtp_vrfy
; /* ACL run for VRFY */
324 extern tree_node
*acl_var_c
; /* ACL connection variables */
325 extern tree_node
*acl_var_m
; /* ACL message variables */
326 extern uschar
*acl_verify_message
; /* User message for verify failure */
327 extern string_item
*acl_warn_logged
; /* Logged lines */
328 extern uschar
*acl_wherecodes
[]; /* Response codes for ACL fails */
329 extern uschar
*acl_wherenames
[]; /* Names for messages */
330 extern address_item
*addr_duplicate
; /* Duplicate address list */
331 extern address_item address_defaults
; /* Default data for address item */
332 extern uschar
*address_file
; /* Name of file when delivering to one */
333 extern uschar
*address_pipe
; /* Pipe command when delivering to one */
334 extern tree_node
*addresslist_anchor
; /* Tree of defined address lists */
335 extern int addresslist_count
; /* Number defined */
336 extern gid_t
*admin_groups
; /* List of admin groups */
337 extern BOOL allow_domain_literals
; /* As it says */
338 extern BOOL allow_mx_to_ip
; /* Allow MX records to -> ip address */
339 #ifdef EXPERIMENTAL_ARC
340 struct arc_set
*arc_received
; /* highest ARC instance evaluation struct */
341 extern int arc_received_instance
; /* highest ARC instance number in headers */
342 extern int arc_oldest_pass
; /* lowest passing instance number in headers */
343 extern const uschar
*arc_state
; /* verification state */
344 extern const uschar
*arc_state_reason
;
346 extern BOOL allow_utf8_domains
; /* For experimenting */
347 extern uschar
*authenticated_fail_id
; /* ID that failed authentication */
348 extern uschar
*authenticated_id
; /* ID that was authenticated */
349 extern uschar
*authenticated_sender
; /* From AUTH on MAIL */
350 extern BOOL authentication_failed
; /* TRUE if AUTH was tried and failed */
351 extern uschar
*auth_advertise_hosts
; /* Only advertise to these */
352 extern auth_info auths_available
[]; /* Vector of available auth mechanisms */
353 extern auth_instance
*auths
; /* Chain of instantiated auths */
354 extern auth_instance auth_defaults
; /* Default values */
355 extern uschar
*auth_defer_msg
; /* Error message for log */
356 extern uschar
*auth_defer_user_msg
; /* Error message for user */
357 extern uschar
*auth_vars
[]; /* $authn variables */
358 extern int auto_thaw
; /* Auto-thaw interval */
359 #ifdef WITH_CONTENT_SCAN
360 extern int av_failed
; /* TRUE if the AV process failed */
361 extern uschar
*av_scanner
; /* AntiVirus scanner to use for the malware condition */
364 extern uschar
*base62_chars
; /* Table of base-62 characters */
365 extern uschar
*bi_command
; /* Command for -bi option */
366 extern uschar
*big_buffer
; /* Used for various temp things */
367 extern int big_buffer_size
; /* Current size (can expand) */
368 #ifdef EXPERIMENTAL_BRIGHTMAIL
369 extern uschar
*bmi_alt_location
; /* expansion variable that contains the alternate location for the rcpt (available during routing) */
370 extern uschar
*bmi_base64_tracker_verdict
; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
371 extern uschar
*bmi_base64_verdict
; /* expansion variable with base-64 encoded verdict string (available during routing) */
372 extern uschar
*bmi_config_file
; /* Brightmail config file */
373 extern int bmi_deliver
; /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
374 extern int bmi_run
; /* Flag that determines if message should be run through Brightmail server */
375 extern uschar
*bmi_verdicts
; /* BASE64-encoded verdicts with recipient lists */
377 extern int bsmtp_transaction_linecount
; /* Start of last transaction */
378 extern int body_8bitmime
; /* sender declared BODY= ; 7=7BIT, 8=8BITMIME */
379 extern uschar
*bounce_message_file
; /* Template file */
380 extern uschar
*bounce_message_text
; /* One-liner */
381 extern uschar
*bounce_recipient
; /* When writing an errmsg */
382 extern BOOL bounce_return_body
; /* Include body in returned message */
383 extern int bounce_return_linesize_limit
; /* Max line length in return */
384 extern BOOL bounce_return_message
; /* Include message in bounce */
385 extern int bounce_return_size_limit
; /* Max amount to return */
386 extern uschar
*bounce_sender_authentication
; /* AUTH address for bounces */
388 extern uschar
*callout_address
; /* Address used for a malware/spamd/verify etc. callout */
389 extern int callout_cache_domain_positive_expire
; /* Time for positive domain callout cache records to expire */
390 extern int callout_cache_domain_negative_expire
; /* Time for negative domain callout cache records to expire */
391 extern int callout_cache_positive_expire
; /* Time for positive callout cache records to expire */
392 extern int callout_cache_negative_expire
; /* Time for negative callout cache records to expire */
393 extern uschar
*callout_random_local_part
; /* Local part to be used to check if server called will accept any local part */
394 extern uschar
*check_dns_names_pattern
;/* Regex for syntax check */
395 extern int check_log_inodes
; /* Minimum for message acceptance */
396 extern int_eximarith_t check_log_space
; /* Minimum for message acceptance */
397 extern BOOL check_rfc2047_length
; /* Check RFC 2047 encoded string length */
398 extern int check_spool_inodes
; /* Minimum for message acceptance */
399 extern int_eximarith_t check_spool_space
; /* Minimum for message acceptance */
400 extern uschar
*chunking_advertise_hosts
; /* RFC 3030 CHUNKING */
401 extern unsigned chunking_datasize
;
402 extern unsigned chunking_data_left
;
403 extern chunking_state_t chunking_state
;
404 extern uschar
*client_authenticator
; /* Authenticator name used for smtp delivery */
405 extern uschar
*client_authenticated_id
; /* "login" name used for SMTP AUTH */
406 extern uschar
*client_authenticated_sender
; /* AUTH option to SMTP MAIL FROM (not yet used) */
407 extern int clmacro_count
; /* Number of command line macros */
408 extern uschar
*clmacros
[]; /* Copy of them, for re-exec */
409 extern BOOL commandline_checks_require_admin
; /* belt and braces for insecure setups */
410 extern int connection_max_messages
;/* Max down one SMTP connection */
411 extern FILE *config_file
; /* Configuration file */
412 extern const uschar
*config_filename
; /* Configuration file name */
413 extern gid_t config_gid
; /* Additional group owner */
414 extern int config_lineno
; /* Line number */
415 extern uschar
*config_main_filelist
; /* List of possible config files */
416 extern uschar
*config_main_filename
; /* File name actually used */
417 extern uschar
*config_main_directory
; /* Directory where the main config file was found */
418 extern uid_t config_uid
; /* Additional owner */
419 extern uschar
*continue_proxy_cipher
; /* TLS cipher for proxied continued delivery */
420 extern uschar
*continue_hostname
; /* Host for continued delivery */
421 extern uschar
*continue_host_address
; /* IP address for ditto */
422 extern int continue_sequence
; /* Sequence num for continued delivery */
423 extern uschar
*continue_transport
; /* Transport for continued delivery */
425 extern uschar
*csa_status
; /* Client SMTP Authorization result */
428 unsigned callout_hold_only
:1; /* Conn is only for verify callout */
429 unsigned delivery
:1; /* When to attempt */
430 unsigned defer_pass
:1; /* Pass 4xx to caller rather than spooling */
431 unsigned is_tls
:1; /* Conn has TLS active */
432 client_conn_ctx cctx
; /* Open connection */
433 int nrcpt
; /* Count of addresses */
434 uschar
* transport
; /* Name of transport */
435 uschar
* interface
; /* (address of) */
436 uschar
* snd_ip
; /* sending_ip_address */
437 int snd_port
; /* sending_port */
438 unsigned peer_options
; /* smtp_peer_options */
439 host_item host
; /* Host used */
440 address_item addr
; /* (Chain of) addresses */
442 extern cut_t cutthrough
; /* Deliver-concurrently */
444 extern uschar
*daemon_smtp_port
; /* Can be a list of ports */
445 extern int daemon_startup_retries
; /* Number of times to retry */
446 extern int daemon_startup_sleep
; /* Sleep between retries */
448 #ifdef EXPERIMENTAL_DCC
449 extern BOOL dcc_direct_add_header
; /* directly add header */
450 extern uschar
*dcc_header
; /* dcc header */
451 extern uschar
*dcc_result
; /* dcc result */
452 extern uschar
*dccifd_address
; /* address of the dccifd daemon */
453 extern uschar
*dccifd_options
; /* options for the dccifd daemon */
456 extern int debug_fd
; /* The fd for debug_file */
457 extern FILE *debug_file
; /* Where to write debugging info */
458 extern int debug_notall
[]; /* Debug options excluded from +all */
459 extern bit_table debug_options
[]; /* Table of debug options */
460 extern int debug_options_count
; /* Size of table */
461 extern BOOL debug_store
; /* Do extra checks on store_reset */
462 extern int delay_warning
[]; /* Times between warnings */
463 extern uschar
*delay_warning_condition
; /* Condition string for warnings */
464 extern BOOL delivery_date_remove
; /* Remove delivery-date headers */
466 extern uschar
*deliver_address_data
; /* Arbitrary data for an address */
467 extern int deliver_datafile
; /* FD for data part of message */
468 extern const uschar
*deliver_domain
; /* The local domain for delivery */
469 extern uschar
*deliver_domain_data
; /* From domain lookup */
470 extern const uschar
*deliver_domain_orig
; /* The original local domain for delivery */
471 extern const uschar
*deliver_domain_parent
; /* The parent domain for delivery */
472 extern BOOL deliver_drop_privilege
; /* TRUE for unprivileged delivery */
473 extern time_t deliver_frozen_at
; /* Time of freezing */
474 extern uschar
*deliver_home
; /* Home directory for pipes */
475 extern const uschar
*deliver_host
; /* (First) host for routed local deliveries */
476 /* Remote host for filter */
477 extern const uschar
*deliver_host_address
; /* Address for remote delivery filter */
478 extern int deliver_host_port
; /* Address for remote delivery filter */
479 extern uschar
*deliver_in_buffer
; /* Buffer for copying file */
480 extern ino_t deliver_inode
; /* Inode for appendfile */
481 extern uschar
*deliver_localpart
; /* The local part for delivery */
482 extern uschar
*deliver_localpart_data
; /* From local part lookup */
483 extern uschar
*deliver_localpart_orig
; /* The original local part for delivery */
484 extern uschar
*deliver_localpart_parent
; /* The parent local part for delivery */
485 extern uschar
*deliver_localpart_prefix
; /* The stripped prefix, if any */
486 extern uschar
*deliver_localpart_suffix
; /* The stripped suffix, if any */
487 extern uschar
*deliver_out_buffer
; /* Buffer for copying file */
488 extern int deliver_queue_load_max
; /* Different value for queue running */
489 extern address_item
*deliver_recipients
; /* Current set of addresses */
490 extern uschar
*deliver_selectstring
; /* For selecting by recipient */
491 extern uschar
*deliver_selectstring_sender
; /* For selecting by sender */
492 #ifdef ENABLE_DISABLE_FSYNC
493 extern BOOL disable_fsync
; /* Not for normal use */
495 extern BOOL disable_ipv6
; /* Don't do any IPv6 things */
498 extern unsigned dkim_collect_input
; /* Runtime count of dkim signtures; tracks whether SMTP input is fed to DKIM validation */
499 extern uschar
*dkim_cur_signer
; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
500 extern int dkim_key_length
; /* Expansion variable, length of signing key in bits */
501 extern void *dkim_signatures
; /* Actually a (pdkim_signature *) but most files do not need to know */
502 extern uschar
*dkim_signers
; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
503 extern uschar
*dkim_signing_domain
; /* Expansion variable, domain used for signing a message. */
504 extern uschar
*dkim_signing_selector
; /* Expansion variable, selector used for signing a message. */
505 extern uschar
*dkim_verify_overall
; /* First successful domain verified, or null */
506 extern uschar
*dkim_verify_signers
; /* Colon-separated list of domains for each of which we call the DKIM ACL */
507 extern uschar
*dkim_verify_status
; /* result for this signature */
508 extern uschar
*dkim_verify_reason
; /* result for this signature */
510 #ifdef EXPERIMENTAL_DMARC
511 extern uschar
*dmarc_domain_policy
; /* Expansion for declared policy of used domain */
512 extern uschar
*dmarc_forensic_sender
; /* Set sender address for forensic reports */
513 extern uschar
*dmarc_history_file
; /* Expansion variable, file to store dmarc results */
514 extern uschar
*dmarc_status
; /* Expansion variable, one word value */
515 extern uschar
*dmarc_status_text
; /* Expansion variable, human readable value */
516 extern uschar
*dmarc_tld_file
; /* Mozilla TLDs text file */
517 extern uschar
*dmarc_used_domain
; /* Expansion variable, domain libopendmarc chose for DMARC policy lookup */
520 extern uschar
*dns_again_means_nonexist
; /* Domains that are badly set up */
521 extern int dns_csa_search_limit
; /* How deep to search for CSA SRV records */
522 extern BOOL dns_csa_use_reverse
; /* Check CSA in reverse DNS? (non-standard) */
523 extern int dns_cname_loops
; /* Follow CNAMEs returned by resolver to this depth */
524 extern uschar
*dns_ipv4_lookup
; /* For these domains, don't look for AAAA (or A6) */
526 extern int dns_dane_ok
; /* Ok to use DANE when checking TLS authenticity */
528 extern int dns_retrans
; /* Retransmission time setting */
529 extern int dns_retry
; /* Number of retries */
530 extern int dns_dnssec_ok
; /* When constructing DNS query, set DO flag */
531 extern uschar
*dns_trust_aa
; /* DNSSEC trust AA as AD */
532 extern int dns_use_edns0
; /* Coerce EDNS0 support on/off in resolver. */
533 extern uschar
*dnslist_domain
; /* DNS (black) list domain */
534 extern uschar
*dnslist_matched
; /* DNS (black) list matched key */
535 extern uschar
*dnslist_text
; /* DNS (black) list text message */
536 extern uschar
*dnslist_value
; /* DNS (black) list IP address */
537 extern tree_node
*domainlist_anchor
; /* Tree of defined domain lists */
538 extern int domainlist_count
; /* Number defined */
540 /* This option is now a no-opt, retained for compatibility */
541 extern BOOL drop_cr
; /* For broken local MUAs */
543 extern uschar
*dsn_from
; /* From: string for DSNs */
545 extern BOOL envelope_to_remove
; /* Remove envelope_to_headers */
546 extern int errno_quota
; /* Quota errno in this OS */
547 extern int error_handling
; /* Error handling style */
548 extern uschar
*errors_copy
; /* For taking copies of errors */
549 extern uschar
*errors_reply_to
; /* Reply-to for error messages */
550 extern int errors_sender_rc
; /* Return after message to sender*/
552 #ifndef DISABLE_EVENT
553 extern uschar
*event_action
; /* expansion for delivery events */
554 extern uschar
*event_data
; /* event data */
555 extern int event_defer_errno
; /* error number set when a remote delivery is deferred with a host error */
556 extern const uschar
*event_name
; /* event classification */
559 extern gid_t exim_gid
; /* To be used with exim_uid */
560 extern BOOL exim_gid_set
; /* TRUE if exim_gid set */
561 extern uschar
*exim_path
; /* Path to exec exim */
562 extern const uschar
*exim_sieve_extension_list
[]; /* list of sieve extensions */
563 extern uid_t exim_uid
; /* Non-root uid for exim */
564 extern BOOL exim_uid_set
; /* TRUE if exim_uid set */
565 extern int expand_level
; /* Nesting depth; indent for debug */
566 extern int expand_forbid
; /* RDO flags for forbidding things */
567 extern int expand_nlength
[]; /* Lengths of numbered strings */
568 extern int expand_nmax
; /* Max numerical value */
569 extern uschar
*expand_nstring
[]; /* Numbered strings */
570 extern BOOL extract_addresses_remove_arguments
; /* Controls -t behaviour */
571 extern uschar
*extra_local_interfaces
; /* Local, non-listen interfaces */
573 extern int fake_response
; /* Fake FAIL or DEFER response to data */
574 extern uschar
*fake_response_text
; /* User defined message for the above. Default is in globals.c. */
575 extern int filter_n
[FILTER_VARIABLE_COUNT
]; /* filter variables */
576 extern int filter_sn
[FILTER_VARIABLE_COUNT
]; /* variables set by system filter */
577 extern int filter_test
; /* Filter test type */
578 extern uschar
*filter_test_sfile
; /* System filter test file */
579 extern uschar
*filter_test_ufile
; /* User filter test file */
580 extern uschar
*filter_thisaddress
; /* For address looping */
581 extern int finduser_retries
; /* Retry count for getpwnam() */
582 extern uid_t fixed_never_users
[]; /* Can't be overridden */
583 extern uschar
*freeze_tell
; /* Message on (some) freezings */
584 extern uschar
*freeze_tell_config
; /* The configured setting */
585 extern uschar
*fudged_queue_times
; /* For use in test harness */
587 extern uschar
*gecos_name
; /* To be expanded when pattern matches */
588 extern uschar
*gecos_pattern
; /* Pattern to match */
589 extern rewrite_rule
*global_rewrite_rules
; /* Chain of rewriting rules */
591 extern volatile sig_atomic_t had_command_timeout
; /* Alarm sighandler called */
592 extern volatile sig_atomic_t had_command_sigterm
; /* TERM sighandler called */
593 extern volatile sig_atomic_t had_data_timeout
; /* Alarm sighandler called */
594 extern volatile sig_atomic_t had_data_sigint
; /* TERM/INT sighandler called */
595 extern int header_insert_maxlen
; /* Max for inserting headers */
596 extern int header_maxsize
; /* Max total length for header */
597 extern int header_line_maxsize
; /* Max for an individual line */
598 extern header_name header_names
[]; /* Table of header names */
599 extern int header_names_size
; /* Number of entries */
600 extern uschar
*helo_accept_junk_hosts
; /* Allowed to use junk arg */
601 extern uschar
*helo_allow_chars
; /* Rogue chars to allow in HELO/EHLO */
602 extern uschar
*helo_lookup_domains
; /* If these given, lookup host name */
603 extern uschar
*helo_try_verify_hosts
; /* Soft check HELO argument for these */
604 extern uschar
*helo_verify_hosts
; /* Hard check HELO argument for these */
605 extern const uschar
*hex_digits
; /* Used in several places */
606 extern uschar
*hold_domains
; /* Hold up deliveries to these */
607 extern uschar
*host_data
; /* Obtained from lookup in ACL */
608 extern uschar
*host_lookup
; /* For which IP addresses are always looked up */
609 extern BOOL host_lookup_deferred
; /* TRUE if lookup deferred */
610 extern BOOL host_lookup_failed
; /* TRUE if lookup failed */
611 extern uschar
*host_lookup_order
; /* Order of host lookup types */
612 extern uschar
*host_lookup_msg
; /* Text for why it failed */
613 extern int host_number
; /* For sharing spools */
614 extern uschar
*host_number_string
; /* For expanding */
615 extern uschar
*host_reject_connection
; /* Reject these hosts */
616 extern tree_node
*hostlist_anchor
; /* Tree of defined host lists */
617 extern int hostlist_count
; /* Number defined */
618 extern uschar
*hosts_connection_nolog
; /* Limits the logging option */
619 extern uschar
*hosts_treat_as_local
; /* For routing */
621 extern int ignore_bounce_errors_after
; /* Keep them for this time. */
622 extern BOOL ignore_fromline_local
; /* Local SMTP ignore fromline */
623 extern uschar
*ignore_fromline_hosts
; /* Hosts permitted to send "From " */
624 extern int inetd_wait_timeout
; /* Timeout for inetd wait mode */
625 extern uschar
*initial_cwd
; /* The directory we where in at startup */
626 extern uschar
*iterate_item
; /* Item from iterate list */
628 extern int journal_fd
; /* Fd for journal file */
630 extern uschar
*keep_environment
; /* Whitelist for environment variables */
631 extern int keep_malformed
; /* Time to keep malformed messages */
633 extern uschar
*eldap_dn
; /* Where LDAP DNs are left */
634 extern int load_average
; /* Most recently read load average */
635 extern BOOL local_from_check
; /* For adding Sender: (global value) */
636 extern uschar
*local_from_prefix
; /* Permitted prefixes */
637 extern uschar
*local_from_suffix
; /* Permitted suffixes */
638 extern uschar
*local_interfaces
; /* For forcing specific interfaces */
639 #ifdef HAVE_LOCAL_SCAN
640 extern uschar
*local_scan_data
; /* Text returned by local_scan() */
641 extern optionlist local_scan_options
[];/* Option list for local_scan() */
642 extern int local_scan_options_count
; /* Size of the list */
643 extern int local_scan_timeout
; /* Timeout for local_scan() */
645 extern BOOL local_sender_retain
; /* Retain Sender: (with no From: check) */
646 extern gid_t local_user_gid
; /* As it says; may be set in routers */
647 extern uid_t local_user_uid
; /* As it says; may be set in routers */
648 extern tree_node
*localpartlist_anchor
;/* Tree of defined localpart lists */
649 extern int localpartlist_count
; /* Number defined */
650 extern uschar
*log_buffer
; /* For constructing log entries */
651 extern int log_default
[]; /* Initialization list for log_selector */
652 extern uschar
*log_file_path
; /* If unset, use default */
653 extern int log_notall
[]; /* Log options excluded from +all */
654 extern bit_table log_options
[]; /* Table of options */
655 extern int log_options_count
; /* Size of table */
656 extern int log_reject_target
; /* Target log for ACL rejections */
657 extern unsigned int log_selector
[]; /* Bit map of logging options */
658 extern uschar
*log_selector_string
; /* As supplied in the config */
659 extern FILE *log_stderr
; /* Copy of stderr for log use, or NULL */
660 extern BOOL log_timezone
; /* TRUE to include the timezone in log lines */
661 extern uschar
*login_sender_address
; /* The actual sender address */
662 extern lookup_info
**lookup_list
; /* Array of pointers to available lookups */
663 extern int lookup_list_count
; /* Number of entries in the list */
664 extern uschar
*lookup_dnssec_authenticated
; /* AD status of dns lookup */
665 extern int lookup_open_max
; /* Max lookup files to cache */
666 extern uschar
*lookup_value
; /* Value looked up from file */
668 extern macro_item
*macros
; /* Configuration macros */
669 extern macro_item
*macros_user
; /* Non-builtin configuration macros */
670 extern macro_item
*mlast
; /* Last item in macro list */
671 extern uschar
*mailstore_basename
; /* For mailstore deliveries */
672 #ifdef WITH_CONTENT_SCAN
673 extern uschar
*malware_name
; /* Name of virus or malware ("W32/Klez-H") */
675 extern int max_received_linelength
;/* What it says */
676 extern int max_username_length
; /* For systems with broken getpwnam() */
677 extern int message_age
; /* In seconds */
678 extern uschar
*message_body
; /* Start of message body for filter */
679 extern uschar
*message_body_end
; /* End of message body for filter */
680 extern BOOL message_body_newlines
; /* FALSE => remove newlines */
681 extern int message_body_size
; /* Sic */
682 extern int message_body_visible
; /* Amount visible in message_body */
683 extern int message_ended
; /* State of message reading and how ended */
684 extern uschar
*message_headers
; /* When built */
685 extern uschar message_id_option
[]; /* -E<message-id> for use as option */
686 extern uschar
*message_id_external
; /* External form of following */
687 extern uschar
*message_id_domain
; /* Expanded to form domain-part of message_id */
688 extern uschar
*message_id_text
; /* Expanded to form message_id */
689 extern struct timeval message_id_tv
; /* Time used to create last message_id */
690 extern int message_linecount
; /* As it says */
691 extern BOOL message_logs
; /* TRUE to write message logs */
692 extern int message_size
; /* Size of message */
693 extern uschar
*message_size_limit
; /* As it says */
695 extern BOOL message_smtputf8
; /* Internationalized mail handling */
696 extern int message_utf8_downconvert
; /* convert from utf8 */
697 const extern pcre
*regex_UTF8
; /* For recognizing SMTPUTF8 settings */
699 extern uschar message_subdir
[]; /* Subdirectory for messages */
700 extern uschar
*message_reference
; /* Reference for error messages */
702 /* MIME ACL expandables */
703 #ifdef WITH_CONTENT_SCAN
704 extern int mime_anomaly_level
;
705 extern const uschar
*mime_anomaly_text
;
706 extern uschar
*mime_boundary
;
707 extern uschar
*mime_charset
;
708 extern uschar
*mime_content_description
;
709 extern uschar
*mime_content_disposition
;
710 extern uschar
*mime_content_id
;
711 extern unsigned int mime_content_size
;
712 extern uschar
*mime_content_transfer_encoding
;
713 extern uschar
*mime_content_type
;
714 extern uschar
*mime_decoded_filename
;
715 extern uschar
*mime_filename
;
716 extern int mime_is_multipart
;
717 extern int mime_is_coverletter
;
718 extern int mime_is_rfc822
;
719 extern int mime_part_count
;
722 extern BOOL mua_wrapper
; /* TRUE when Exim is wrapping an MUA */
724 extern uid_t
*never_users
; /* List of uids never to be used */
725 #ifdef WITH_CONTENT_SCAN
728 extern const int on
; /* For setsockopt */
729 extern const int off
;
731 extern optionlist optionlist_auths
[]; /* These option lists are made */
732 extern int optionlist_auths_size
; /* global so that readconf can */
733 extern optionlist optionlist_routers
[]; /* see them for printing out */
734 extern int optionlist_routers_size
; /* the options. */
735 extern optionlist optionlist_transports
[];
736 extern int optionlist_transports_size
;
738 extern uid_t original_euid
; /* Original effective uid */
739 extern gid_t originator_gid
; /* Gid of whoever wrote spool file */
740 extern uschar
*originator_login
; /* Login of same */
741 extern uschar
*originator_name
; /* Full name of same */
742 extern uid_t originator_uid
; /* Uid of ditto */
743 extern uschar
*override_local_interfaces
; /* Value of -oX argument */
744 extern uschar
*override_pid_file_path
; /* Value of -oP argument */
746 extern uschar
*percent_hack_domains
; /* Local domains for which '% operates */
747 extern uschar
*pid_file_path
; /* For writing daemon pids */
748 #ifdef EXPERIMENTAL_PIPE_CONNECT
749 extern uschar
*pipe_connect_advertise_hosts
; /* for banner/EHLO pipelining */
751 extern uschar
*pipelining_advertise_hosts
; /* As it says */
753 extern BOOL prdr_enable
; /* As it says */
754 extern BOOL prdr_requested
; /* Connecting mail server wants PRDR */
756 extern BOOL preserve_message_logs
; /* Save msglog files */
757 extern uschar
*primary_hostname
; /* Primary name of this computer */
758 extern BOOL print_topbitchars
; /* Topbit chars are printing chars */
759 extern uschar process_info
[]; /* For SIGUSR1 output */
760 extern int process_info_len
;
761 extern uschar
*process_log_path
; /* Alternate path */
762 extern BOOL prod_requires_admin
; /* TRUE if prodding requires admin */
764 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
765 extern uschar
*hosts_proxy
; /* Hostlist which (require) use proxy protocol */
766 extern uschar
*proxy_external_address
; /* IP of remote interface of proxy */
767 extern int proxy_external_port
; /* Port on remote interface of proxy */
768 extern uschar
*proxy_local_address
; /* IP of local interface of proxy */
769 extern int proxy_local_port
; /* Port on local interface of proxy */
770 extern BOOL proxy_session
; /* TRUE if receiving mail from valid proxy */
773 extern uschar
*prvscheck_address
; /* Set during prvscheck expansion item */
774 extern uschar
*prvscheck_keynum
; /* Set during prvscheck expansion item */
775 extern uschar
*prvscheck_result
; /* Set during prvscheck expansion item */
777 extern const uschar
*qualify_domain_recipient
; /* Domain to qualify recipients with */
778 extern uschar
*qualify_domain_sender
; /* Domain to qualify senders with */
779 extern uschar
*queue_domains
; /* Queue these domains */
780 extern BOOL queue_list_requires_admin
; /* TRUE if -bp requires admin */
781 /* immediate children */
782 extern pid_t queue_run_pid
; /* PID of the queue running process or 0 */
783 extern int queue_run_pipe
; /* Pipe for synchronizing */
784 extern int queue_interval
; /* Queue running interval */
785 extern uschar
*queue_name
; /* Name of queue, if nondefault spooling */
786 extern BOOL queue_only
; /* TRUE to disable immediate delivery */
787 extern int queue_only_load
; /* Max load before auto-queue */
788 extern BOOL queue_only_load_latch
; /* Latch queue_only_load TRUE */
789 extern uschar
*queue_only_file
; /* Queue if file exists/not-exists */
790 extern BOOL queue_only_override
; /* Allow override from command line */
791 extern BOOL queue_run_in_order
; /* As opposed to random */
792 extern uschar
*queue_run_max
; /* Max queue runners */
793 extern uschar
*queue_smtp_domains
; /* Ditto, for these domains */
795 extern unsigned int random_seed
; /* Seed for random numbers */
796 extern tree_node
*ratelimiters_cmd
; /* Results of command ratelimit checks */
797 extern tree_node
*ratelimiters_conn
; /* Results of connection ratelimit checks */
798 extern tree_node
*ratelimiters_mail
; /* Results of per-mail ratelimit checks */
799 extern uschar
*raw_active_hostname
; /* Pre-expansion */
800 extern uschar
*raw_sender
; /* Before rewriting */
801 extern uschar
**raw_recipients
; /* Before rewriting */
802 extern int raw_recipients_count
;
803 extern int rcpt_count
; /* Count of RCPT commands in a message */
804 extern int rcpt_fail_count
; /* Those that got 5xx */
805 extern int rcpt_defer_count
; /* Those that got 4xx */
806 extern gid_t real_gid
; /* Real gid */
807 extern uid_t real_uid
; /* Real user running program */
808 extern int receive_linecount
; /* Mainly for BSMTP errors */
809 extern int receive_messagecount
; /* Mainly for BSMTP errors */
810 extern int receive_timeout
; /* For non-SMTP acceptance */
811 extern int received_count
; /* Count of Received: headers */
812 extern uschar
*received_for
; /* For "for" field */
813 extern uschar
*received_header_text
; /* Definition of Received: header */
814 extern int received_headers_max
; /* Max count of Received: headers */
815 extern struct timeval received_time
; /* Time the message was received */
816 extern struct timeval received_time_taken
; /* Interval the message took to be received */
817 extern uschar
*recipient_data
; /* lookup data for recipients */
818 extern uschar
*recipient_unqualified_hosts
; /* Permitted unqualified recipients */
819 extern uschar
*recipient_verify_failure
; /* What went wrong */
820 extern int recipients_list_max
; /* Maximum number fitting in list */
821 extern int recipients_max
; /* Max permitted */
822 extern BOOL recipients_max_reject
; /* If TRUE, reject whole message */
823 extern const pcre
*regex_AUTH
; /* For recognizing AUTH settings */
824 extern const pcre
*regex_check_dns_names
; /* For DNS name checking */
825 extern const pcre
*regex_From
; /* For recognizing "From_" lines */
826 extern const pcre
*regex_CHUNKING
; /* For recognizing CHUNKING (RFC 3030) */
827 extern const pcre
*regex_IGNOREQUOTA
; /* For recognizing IGNOREQUOTA (LMTP) */
828 extern const pcre
*regex_PIPELINING
; /* For recognizing PIPELINING */
829 extern const pcre
*regex_SIZE
; /* For recognizing SIZE settings */
830 #ifdef EXPERIMENTAL_PIPE_CONNECT
831 extern const pcre
*regex_EARLY_PIPE
; /* For recognizing PIPE_CONNCT */
833 extern const pcre
*regex_ismsgid
; /* Compiled r.e. for message it */
834 extern const pcre
*regex_smtp_code
; /* For recognizing SMTP codes */
835 extern uschar
*regex_vars
[]; /* $regexN variables */
836 #ifdef WHITELIST_D_MACROS
837 extern const pcre
*regex_whitelisted_macro
; /* For -D macro values */
839 #ifdef WITH_CONTENT_SCAN
840 extern uschar
*regex_match_string
; /* regex that matched a line (regex ACL condition) */
842 extern int remote_delivery_count
; /* Number of remote addresses */
843 extern int remote_max_parallel
; /* Maximum parallel delivery */
844 extern uschar
*remote_sort_domains
; /* Remote domain sorting order */
845 extern retry_config
*retries
; /* Chain of retry config information */
846 extern int retry_data_expire
; /* When to expire retry data */
847 extern int retry_interval_max
; /* Absolute maximum */
848 extern int retry_maximum_timeout
; /* The maximum timeout */
849 extern uschar
*return_path
; /* Return path for a message */
850 extern BOOL return_path_remove
; /* Remove return-path headers */
851 extern int rewrite_existflags
; /* Indicate which headers have rewrites */
852 extern uschar
*rfc1413_hosts
; /* RFC hosts */
853 extern int rfc1413_query_timeout
; /* Timeout on RFC 1413 calls */
854 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
855 extern uid_t root_gid
; /* The gid for root */
856 extern uid_t root_uid
; /* The uid for root */
857 extern router_info routers_available
[];/* Vector of available routers */
858 extern router_instance
*routers
; /* Chain of instantiated routers */
859 extern router_instance router_defaults
;/* Default values */
860 extern uschar
*router_name
; /* Name of router last started */
861 extern ip_address_item
*running_interfaces
; /* Host's running interfaces */
862 extern uschar
*running_status
; /* Flag string for testing */
863 extern int runrc
; /* rc from ${run} */
865 extern uschar
*search_error_message
; /* Details of lookup problem */
866 extern uschar
*self_hostname
; /* Self host after routing->directors */
867 extern unsigned int sender_address_cache
[(MAX_NAMED_LIST
* 2)/32]; /* Cache bits for sender */
868 extern uschar
*sender_address_data
; /* address_data from sender verify */
869 extern uschar
*sender_address_unrewritten
; /* Set if rewritten by verify */
870 extern uschar
*sender_data
; /* lookup result for senders */
871 extern unsigned int sender_domain_cache
[(MAX_NAMED_LIST
* 2)/32]; /* Cache bits for sender domain */
872 extern uschar
*sender_fullhost
; /* Sender host name + address */
873 extern BOOL sender_helo_dnssec
; /* True if HELO verify used DNS and was DNSSEC */
874 extern uschar
*sender_helo_name
; /* Host name from HELO/EHLO */
875 extern uschar
**sender_host_aliases
; /* Points to list of alias names */
876 extern uschar
*sender_host_auth_pubname
; /* Public-name of authentication method */
877 extern unsigned int sender_host_cache
[(MAX_NAMED_LIST
* 2)/32]; /* Cache bits for incoming host */
878 extern BOOL sender_host_dnssec
; /* true if sender_host_name verified in DNSSEC */
879 extern uschar
*sender_ident
; /* Sender identity via RFC 1413 */
880 extern uschar
*sender_rate
; /* Sender rate computed by ACL */
881 extern uschar
*sender_rate_limit
; /* Configured rate limit */
882 extern uschar
*sender_rate_period
; /* Configured smoothing period */
883 extern uschar
*sender_rcvhost
; /* Host data for Received: */
884 extern uschar
*sender_unqualified_hosts
; /* Permitted unqualified senders */
885 extern uschar
*sender_verify_failure
; /* What went wrong */
886 extern address_item
*sender_verified_list
; /* Saved chain of sender verifies */
887 extern address_item
*sender_verified_failed
; /* The one that caused denial */
888 extern uschar
*sending_ip_address
; /* Address of outgoing (SMTP) interface */
889 extern int sending_port
; /* Port of outgoing interface */
890 extern SIGNAL_BOOL sigalrm_seen
; /* Flag for sigalrm_handler */
891 extern const uschar
*sigalarm_setter
; /* For debug, set to callpoint of alarm() */
892 extern uschar
**sighup_argv
; /* Args for re-execing after SIGHUP */
893 extern int slow_lookup_log
; /* Log DNS lookups taking longer than N millisecs */
894 extern int smtp_accept_count
; /* Count of connections */
895 extern BOOL smtp_accept_keepalive
; /* Set keepalive on incoming */
896 extern int smtp_accept_max
; /* Max SMTP connections */
897 extern int smtp_accept_max_nonmail
;/* Max non-mail commands in one con */
898 extern uschar
*smtp_accept_max_nonmail_hosts
; /* Limit non-mail cmds from these hosts */
899 extern int smtp_accept_max_per_connection
; /* Max msgs per connection */
900 extern uschar
*smtp_accept_max_per_host
; /* Max SMTP cons from one IP addr */
901 extern int smtp_accept_queue
; /* Queue after so many connections */
902 extern int smtp_accept_queue_per_connection
; /* Queue after so many msgs */
903 extern int smtp_accept_reserve
; /* Reserve these SMTP connections */
904 extern uschar
*smtp_active_hostname
; /* Hostname for this message */
905 extern uschar
*smtp_banner
; /* Banner string (to be expanded) */
906 extern BOOL smtp_check_spool_space
; /* TRUE to check SMTP SIZE value */
907 extern int smtp_ch_index
; /* Index in smtp_connection_had */
908 extern uschar
*smtp_cmd_argument
; /* For all SMTP commands */
909 extern uschar
*smtp_cmd_buffer
; /* SMTP command buffer */
910 extern struct timeval smtp_connection_start
; /* Start time of SMTP connection */
911 extern uschar smtp_connection_had
[]; /* Recent SMTP commands */
912 extern int smtp_connect_backlog
; /* Max backlog permitted */
913 extern double smtp_delay_mail
; /* Current MAIL delay */
914 extern double smtp_delay_rcpt
; /* Current RCPT delay */
915 extern BOOL smtp_enforce_sync
; /* Enforce sync rules */
916 extern uschar
*smtp_etrn_command
; /* Command to run */
917 extern BOOL smtp_etrn_serialize
; /* Only one at once */
918 extern FILE *smtp_in
; /* Incoming SMTP input file */
919 extern int smtp_load_reserve
; /* Only from reserved if load > this */
920 extern int smtp_mailcmd_count
; /* Count of MAIL commands */
921 extern int smtp_max_synprot_errors
;/* Max syntax/protocol errors */
922 extern int smtp_max_unknown_commands
; /* As it says */
923 extern uschar
*smtp_notquit_reason
; /* Global for disconnect reason */
924 extern FILE *smtp_out
; /* Incoming SMTP output file */
925 extern uschar
*smtp_ratelimit_hosts
; /* Rate limit these hosts */
926 extern uschar
*smtp_ratelimit_mail
; /* Parameters for MAIL limiting */
927 extern uschar
*smtp_ratelimit_rcpt
; /* Parameters for RCPT limiting */
928 extern uschar
*smtp_read_error
; /* Message for SMTP input error */
929 extern int smtp_receive_timeout
; /* Applies to each received line */
930 extern uschar
*smtp_receive_timeout_s
; /* ... expandable version */
931 extern uschar
*smtp_reserve_hosts
; /* Hosts for reserved slots */
932 extern BOOL smtp_return_error_details
; /* TRUE to return full info */
933 extern int smtp_rlm_base
; /* Base interval for MAIL rate limit */
934 extern double smtp_rlm_factor
; /* Factor for MAIL rate limit */
935 extern int smtp_rlm_limit
; /* Max delay */
936 extern int smtp_rlm_threshold
; /* Threshold for RCPT rate limit */
937 extern int smtp_rlr_base
; /* Base interval for RCPT rate limit */
938 extern double smtp_rlr_factor
; /* Factor for RCPT rate limit */
939 extern int smtp_rlr_limit
; /* Max delay */
940 extern int smtp_rlr_threshold
; /* Threshold for RCPT rate limit */
941 extern unsigned smtp_peer_options
; /* Global flags for passed connections */
942 extern unsigned smtp_peer_options_wrap
; /* stacked version hidden by TLS */
944 extern uschar
*smtputf8_advertise_hosts
; /* ingress control */
947 #ifdef WITH_CONTENT_SCAN
948 extern uschar
*spamd_address
; /* address for the spamassassin daemon */
949 extern uschar
*spam_bar
; /* the spam "bar" (textual representation of spam_score) */
950 extern uschar
*spam_report
; /* the spamd report (multiline) */
951 extern uschar
*spam_action
; /* the spamd recommended-action */
952 extern uschar
*spam_score
; /* the spam score (float) */
953 extern uschar
*spam_score_int
; /* spam_score * 10 (int) */
956 extern uschar
*spf_guess
; /* spf best-guess record */
957 extern uschar
*spf_header_comment
; /* spf header comment */
958 extern uschar
*spf_received
; /* Received-SPF: header */
959 extern uschar
*spf_result
; /* spf result in string form */
960 extern BOOL spf_result_guessed
; /* spf result is of best-guess operation */
961 extern uschar
*spf_smtp_comment
; /* spf comment to include in SMTP reply */
963 extern BOOL split_spool_directory
; /* TRUE to use multiple subdirs */
964 extern FILE *spool_data_file
; /* handle for -D file */
965 extern uschar
*spool_directory
; /* Name of spool directory */
966 extern BOOL spool_wireformat
; /* can write wireformat -D files */
967 #ifdef EXPERIMENTAL_SRS
968 extern uschar
*srs_config
; /* SRS config secret:max age:hash length:use timestamp:use hash */
969 extern uschar
*srs_db_address
; /* SRS db address */
970 extern uschar
*srs_db_key
; /* SRS db key */
971 extern int srs_hashlength
; /* SRS hash length */
972 extern int srs_hashmin
; /* SRS minimum hash length */
973 extern int srs_maxage
; /* SRS max age */
974 extern uschar
*srs_orig_sender
; /* SRS original sender */
975 extern uschar
*srs_orig_recipient
; /* SRS original recipient */
976 extern uschar
*srs_recipient
; /* SRS recipient */
977 extern uschar
*srs_secrets
; /* SRS secrets list */
978 extern uschar
*srs_status
; /* SRS staus */
979 extern BOOL srs_usehash
; /* SRS use hash flag */
980 extern BOOL srs_usetimestamp
; /* SRS use timestamp flag */
982 extern BOOL strict_acl_vars
; /* ACL variables have to be set before being used */
983 extern int string_datestamp_offset
;/* After insertion by string_format */
984 extern int string_datestamp_length
;/* After insertion by string_format */
985 extern int string_datestamp_type
; /* After insertion by string_format */
986 extern BOOL strip_excess_angle_brackets
; /* Surrounding route-addrs */
987 extern BOOL strip_trailing_dot
; /* Remove dots at ends of domains */
988 extern uschar
*submission_domain
; /* Domain for submission mode */
989 extern uschar
*submission_name
; /* User name set from ACL */
990 extern BOOL syslog_duplication
; /* FALSE => no duplicate logging */
991 extern int syslog_facility
; /* As defined by Syslog.h */
992 extern BOOL syslog_pid
; /* TRUE if PID on syslogs */
993 extern uschar
*syslog_processname
; /* 'ident' param to openlog() */
994 extern BOOL syslog_timestamp
; /* TRUE if time on syslogs */
995 extern uschar
*system_filter
; /* Name of system filter file */
997 extern uschar
*system_filter_directory_transport
; /* Transports for the */
998 extern uschar
*system_filter_file_transport
; /* system filter */
999 extern uschar
*system_filter_pipe_transport
;
1000 extern uschar
*system_filter_reply_transport
;
1002 extern gid_t system_filter_gid
; /* Gid for running system filter */
1003 extern BOOL system_filter_gid_set
; /* TRUE if gid set */
1004 extern uid_t system_filter_uid
; /* Uid for running system filter */
1005 extern BOOL system_filter_uid_set
; /* TRUE if uid set */
1007 extern blob tcp_fastopen_nodata
; /* for zero-data TFO connect requests */
1008 extern BOOL tcp_nodelay
; /* Controls TCP_NODELAY on daemon */
1009 extern tfo_state_t tcp_out_fastopen
; /* TCP fast open */
1010 #ifdef USE_TCP_WRAPPERS
1011 extern uschar
*tcp_wrappers_daemon_name
; /* tcpwrappers daemon lookup name */
1013 extern int test_harness_load_avg
; /* For use when testing */
1014 extern int thismessage_size_limit
; /* Limit for this message */
1015 extern int timeout_frozen_after
; /* Max time to keep frozen messages */
1017 extern uschar
*transport_name
; /* Name of transport last started */
1018 extern int transport_count
; /* Count of bytes transported */
1019 extern int transport_newlines
; /* Accurate count of number of newline chars transported */
1020 extern const uschar
**transport_filter_argv
; /* For on-the-fly filtering */
1021 extern int transport_filter_timeout
; /* Timeout for same */
1023 extern transport_info transports_available
[]; /* Vector of available transports */
1024 extern transport_instance
*transports
; /* Chain of instantiated transports */
1025 extern transport_instance transport_defaults
; /* Default values */
1027 extern int transport_write_timeout
;/* Set to time out individual writes */
1029 extern tree_node
*tree_dns_fails
; /* Tree of DNS lookup failures */
1030 extern tree_node
*tree_duplicates
; /* Tree of duplicate addresses */
1031 extern tree_node
*tree_nonrecipients
; /* Tree of nonrecipient addresses */
1032 extern tree_node
*tree_unusable
; /* Tree of unusable addresses */
1034 extern gid_t
*trusted_groups
; /* List of trusted groups */
1035 extern uid_t
*trusted_users
; /* List of trusted users */
1036 extern uschar
*timezone_string
; /* Required timezone setting */
1038 extern uschar
*unknown_login
; /* To use when login id unknown */
1039 extern uschar
*unknown_username
; /* Ditto */
1040 extern uschar
*untrusted_set_sender
; /* Let untrusted users set these senders */
1041 extern uschar
*uucp_from_pattern
; /* For recognizing "From " lines */
1042 extern uschar
*uucp_from_sender
; /* For building the sender */
1044 extern uschar
*warn_message_file
; /* Template for warning messages */
1045 extern uschar
*warnmsg_delay
; /* String form of delay time */
1046 extern uschar
*warnmsg_recipients
; /* Recipients of warning message */
1047 extern BOOL write_rejectlog
; /* Control of reject logging */
1049 extern uschar
*verify_mode
; /* Running a router in verify mode */
1050 extern uschar
*version_copyright
; /* Copyright notice */
1051 extern uschar
*version_date
; /* Date of compilation */
1052 extern uschar
*version_cnumber
; /* Compile number */
1053 extern uschar
*version_string
; /* Version string */
1055 extern int warning_count
; /* Delay warnings sent for this msg */
1057 /* End of globals.h */
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