2 * This module is an SMTP and ESMTP implementation for the Citadel system.
3 * It is compliant with all of the following:
5 * RFC 821 - Simple Mail Transfer Protocol
6 * RFC 876 - Survey of SMTP Implementations
7 * RFC 1047 - Duplicate messages and SMTP
8 * RFC 1652 - 8 bit MIME
9 * RFC 1869 - Extended Simple Mail Transfer Protocol
10 * RFC 1870 - SMTP Service Extension for Message Size Declaration
11 * RFC 2033 - Local Mail Transfer Protocol
12 * RFC 2197 - SMTP Service Extension for Command Pipelining
13 * RFC 2476 - Message Submission
14 * RFC 2487 - SMTP Service Extension for Secure SMTP over TLS
15 * RFC 2554 - SMTP Service Extension for Authentication
16 * RFC 2821 - Simple Mail Transfer Protocol
17 * RFC 2822 - Internet Message Format
18 * RFC 2920 - SMTP Service Extension for Command Pipelining
20 * The VRFY and EXPN commands have been removed from this implementation
21 * because nobody uses these commands anymore, except for spammers.
23 * Copyright (c) 1998-2009 by the citadel.org team
25 * This program is free software; you can redistribute it and/or modify
26 * it under the terms of the GNU General Public License as published by
27 * the Free Software Foundation; either version 3 of the License, or
28 * (at your option) any later version.
30 * This program is distributed in the hope that it will be useful,
31 * but WITHOUT ANY WARRANTY; without even the implied warranty of
32 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
33 * GNU General Public License for more details.
35 * You should have received a copy of the GNU General Public License
36 * along with this program; if not, write to the Free Software
37 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
49 #include <sys/types.h>
52 #if TIME_WITH_SYS_TIME
53 # include <sys/time.h>
57 # include <sys/time.h>
67 #include <sys/socket.h>
68 #include <netinet/in.h>
69 #include <arpa/inet.h>
70 #include <libcitadel.h>
73 #include "citserver.h"
80 #include "internet_addressing.h"
83 #include "clientsocket.h"
84 #include "locate_host.h"
85 #include "citadel_dirs.h"
94 #include "ctdl_module.h"
96 #include "smtp_util.h"
97 enum { /* Command states for login authentication */
108 /*****************************************************************************/
109 /* SMTP SERVER (INBOUND) STUFF */
110 /*****************************************************************************/
114 * Here's where our SMTP session begins its happy day.
116 void smtp_greeting(int is_msa)
119 char message_to_spammer[1024];
121 strcpy(CC->cs_clientname, "SMTP session");
122 CC->internal_pgm = 1;
123 CC->cs_flags |= CS_STEALTH;
124 CC->session_specific_data = malloc(sizeof(citsmtp));
125 memset(SMTP, 0, sizeof(citsmtp));
127 sSMTP->is_msa = is_msa;
129 /* If this config option is set, reject connections from problem
130 * addresses immediately instead of after they execute a RCPT
132 if ( (config.c_rbl_at_greeting) && (sSMTP->is_msa == 0) ) {
133 if (rbl_check(message_to_spammer)) {
134 if (server_shutting_down)
135 cprintf("421 %s\r\n", message_to_spammer);
137 cprintf("550 %s\r\n", message_to_spammer);
138 CC->kill_me = KILLME_SPAMMER;
139 /* no need to free_recipients(valid), it's not allocated yet */
144 /* Otherwise we're either clean or we check later. */
146 if (CC->nologin==1) {
147 cprintf("451 Too many connections are already open; please try again later.\r\n");
148 CC->kill_me = KILLME_MAX_SESSIONS_EXCEEDED;
149 /* no need to free_recipients(valid), it's not allocated yet */
153 /* Note: the FQDN *must* appear as the first thing after the 220 code.
154 * Some clients (including citmail.c) depend on it being there.
156 cprintf("220 %s ESMTP Citadel server ready.\r\n", config.c_fqdn);
161 * SMTPS is just like SMTP, except it goes crypto right away.
163 void smtps_greeting(void) {
164 CtdlModuleStartCryptoMsgs(NULL, NULL, NULL);
166 if (!CC->redirect_ssl) CC->kill_me = KILLME_NO_CRYPTO; /* kill session if no crypto */
173 * SMTP MSA port requires authentication.
175 void smtp_msa_greeting(void) {
181 * LMTP is like SMTP but with some extra bonus footage added.
183 void lmtp_greeting(void) {
193 * Generic SMTP MTA greeting
195 void smtp_mta_greeting(void) {
201 * We also have an unfiltered LMTP socket that bypasses spam filters.
203 void lmtp_unfiltered_greeting(void) {
209 sSMTP->is_unfiltered = 1;
214 * Login greeting common to all auth methods
216 void smtp_auth_greeting(void) {
217 cprintf("235 Hello, %s\r\n", CC->user.fullname);
218 syslog(LOG_NOTICE, "SMTP authenticated %s\n", CC->user.fullname);
219 CC->internal_pgm = 0;
220 CC->cs_flags &= ~CS_STEALTH;
225 * Implement HELO and EHLO commands.
227 * which_command: 0=HELO, 1=EHLO, 2=LHLO
229 void smtp_hello(char *argbuf, int which_command) {
230 citsmtp *sSMTP = SMTP;
232 safestrncpy(sSMTP->helo_node, argbuf, sizeof sSMTP->helo_node);
234 if ( (which_command != 2) && (sSMTP->is_lmtp) ) {
235 cprintf("500 Only LHLO is allowed when running LMTP\r\n");
239 if ( (which_command == 2) && (sSMTP->is_lmtp == 0) ) {
240 cprintf("500 LHLO is only allowed when running LMTP\r\n");
244 if (which_command == 0) {
245 cprintf("250 Hello %s (%s [%s])\r\n",
252 if (which_command == 1) {
253 cprintf("250-Hello %s (%s [%s])\r\n",
260 cprintf("250-Greetings and joyous salutations.\r\n");
262 cprintf("250-HELP\r\n");
263 cprintf("250-SIZE %ld\r\n", config.c_maxmsglen);
267 * Offer TLS, but only if TLS is not already active.
268 * Furthermore, only offer TLS when running on
269 * the SMTP-MSA port, not on the SMTP-MTA port, due to
270 * questionable reliability of TLS in certain sending MTA's.
272 if ( (!CC->redirect_ssl) && (sSMTP->is_msa) ) {
273 cprintf("250-STARTTLS\r\n");
275 #endif /* HAVE_OPENSSL */
277 cprintf("250-AUTH LOGIN PLAIN\r\n"
278 "250-AUTH=LOGIN PLAIN\r\n"
287 * Implement HELP command.
289 void smtp_help(void) {
290 cprintf("214 RTFM http://www.ietf.org/rfc/rfc2821.txt\r\n");
297 void smtp_get_user(char *argbuf) {
300 citsmtp *sSMTP = SMTP;
302 CtdlDecodeBase64(username, argbuf, SIZ);
303 /* syslog(LOG_DEBUG, "Trying <%s>\n", username); */
304 if (CtdlLoginExistingUser(NULL, username) == login_ok) {
305 CtdlEncodeBase64(buf, "Password:", 9, 0);
306 cprintf("334 %s\r\n", buf);
307 sSMTP->command_state = smtp_password;
310 cprintf("500 No such user.\r\n");
311 sSMTP->command_state = smtp_command;
319 void smtp_get_pass(char *argbuf) {
323 memset(password, 0, sizeof(password));
324 len = CtdlDecodeBase64(password, argbuf, SIZ);
325 /* syslog(LOG_DEBUG, "Trying <%s>\n", password); */
326 if (CtdlTryPassword(password, len) == pass_ok) {
327 smtp_auth_greeting();
330 cprintf("535 Authentication failed.\r\n");
332 SMTP->command_state = smtp_command;
337 * Back end for PLAIN auth method (either inline or multistate)
339 void smtp_try_plain(char *encoded_authstring) {
340 char decoded_authstring[1024];
347 CtdlDecodeBase64(decoded_authstring, encoded_authstring, strlen(encoded_authstring) );
348 safestrncpy(ident, decoded_authstring, sizeof ident);
349 safestrncpy(user, &decoded_authstring[strlen(ident) + 1], sizeof user);
350 len = safestrncpy(pass, &decoded_authstring[strlen(ident) + strlen(user) + 2], sizeof pass);
352 len = sizeof(pass) - 1;
354 SMTP->command_state = smtp_command;
356 if (!IsEmptyStr(ident)) {
357 result = CtdlLoginExistingUser(user, ident);
360 result = CtdlLoginExistingUser(NULL, user);
363 if (result == login_ok) {
364 if (CtdlTryPassword(pass, len) == pass_ok) {
365 smtp_auth_greeting();
369 cprintf("504 Authentication failed.\r\n");
374 * Attempt to perform authenticated SMTP
376 void smtp_auth(char *argbuf) {
377 char username_prompt[64];
379 char encoded_authstring[1024];
382 cprintf("504 Already logged in.\r\n");
386 extract_token(method, argbuf, 0, ' ', sizeof method);
388 if (!strncasecmp(method, "login", 5) ) {
389 if (strlen(argbuf) >= 7) {
390 smtp_get_user(&argbuf[6]);
393 CtdlEncodeBase64(username_prompt, "Username:", 9, 0);
394 cprintf("334 %s\r\n", username_prompt);
395 SMTP->command_state = smtp_user;
400 if (!strncasecmp(method, "plain", 5) ) {
401 if (num_tokens(argbuf, ' ') < 2) {
403 SMTP->command_state = smtp_plain;
407 extract_token(encoded_authstring, argbuf, 1, ' ', sizeof encoded_authstring);
409 smtp_try_plain(encoded_authstring);
413 if (strncasecmp(method, "login", 5) ) {
414 cprintf("504 Unknown authentication method.\r\n");
422 * Implements the RSET (reset state) command.
423 * Currently this just zeroes out the state buffer. If pointers to data
424 * allocated with malloc() are ever placed in the state buffer, we have to
425 * be sure to free() them first!
427 * Set do_response to nonzero to output the SMTP RSET response code.
429 void smtp_rset(int do_response) {
432 citsmtp *sSMTP = SMTP;
435 * Our entire SMTP state is discarded when a RSET command is issued,
436 * but we need to preserve this one little piece of information, so
437 * we save it for later.
439 is_lmtp = sSMTP->is_lmtp;
440 is_unfiltered = sSMTP->is_unfiltered;
442 memset(sSMTP, 0, sizeof(citsmtp));
445 * It is somewhat ambiguous whether we want to log out when a RSET
446 * command is issued. Here's the code to do it. It is commented out
447 * because some clients (such as Pine) issue RSET commands before
448 * each message, but still expect to be logged in.
450 * if (CC->logged_in) {
456 * Reinstate this little piece of information we saved (see above).
458 sSMTP->is_lmtp = is_lmtp;
459 sSMTP->is_unfiltered = is_unfiltered;
462 cprintf("250 Zap!\r\n");
467 * Clear out the portions of the state buffer that need to be cleared out
468 * after the DATA command finishes.
470 void smtp_data_clear(void) {
471 citsmtp *sSMTP = SMTP;
473 strcpy(sSMTP->from, "");
474 strcpy(sSMTP->recipients, "");
475 sSMTP->number_of_recipients = 0;
476 sSMTP->delivery_mode = 0;
477 sSMTP->message_originated_locally = 0;
481 * Implements the "MAIL FROM:" command
483 void smtp_mail(char *argbuf) {
487 citsmtp *sSMTP = SMTP;
489 if (!IsEmptyStr(sSMTP->from)) {
490 cprintf("503 Only one sender permitted\r\n");
494 if (strncasecmp(argbuf, "From:", 5)) {
495 cprintf("501 Syntax error\r\n");
499 strcpy(sSMTP->from, &argbuf[5]);
500 striplt(sSMTP->from);
501 if (haschar(sSMTP->from, '<') > 0) {
502 stripallbut(sSMTP->from, '<', '>');
505 /* We used to reject empty sender names, until it was brought to our
506 * attention that RFC1123 5.2.9 requires that this be allowed. So now
507 * we allow it, but replace the empty string with a fake
508 * address so we don't have to contend with the empty string causing
509 * other code to fail when it's expecting something there.
511 if (IsEmptyStr(sSMTP->from)) {
512 strcpy(sSMTP->from, "someone@example.com");
515 /* If this SMTP connection is from a logged-in user, force the 'from'
516 * to be the user's Internet e-mail address as Citadel knows it.
519 safestrncpy(sSMTP->from, CC->cs_inet_email, sizeof sSMTP->from);
520 cprintf("250 Sender ok <%s>\r\n", sSMTP->from);
521 sSMTP->message_originated_locally = 1;
525 else if (sSMTP->is_lmtp) {
526 /* Bypass forgery checking for LMTP */
529 /* Otherwise, make sure outsiders aren't trying to forge mail from
530 * this system (unless, of course, c_allow_spoofing is enabled)
532 else if (config.c_allow_spoofing == 0) {
533 process_rfc822_addr(sSMTP->from, user, node, name);
534 if (CtdlHostAlias(node) != hostalias_nomatch) {
535 cprintf("550 You must log in to send mail from %s\r\n", node);
536 strcpy(sSMTP->from, "");
541 cprintf("250 Sender ok\r\n");
547 * Implements the "RCPT To:" command
549 void smtp_rcpt(char *argbuf) {
551 char message_to_spammer[SIZ];
552 struct recptypes *valid = NULL;
553 citsmtp *sSMTP = SMTP;
555 if (IsEmptyStr(sSMTP->from)) {
556 cprintf("503 Need MAIL before RCPT\r\n");
560 if (strncasecmp(argbuf, "To:", 3)) {
561 cprintf("501 Syntax error\r\n");
565 if ( (sSMTP->is_msa) && (!CC->logged_in) ) {
566 cprintf("550 You must log in to send mail on this port.\r\n");
567 strcpy(sSMTP->from, "");
571 safestrncpy(recp, &argbuf[3], sizeof recp);
573 stripallbut(recp, '<', '>');
575 if ( (strlen(recp) + strlen(sSMTP->recipients) + 1 ) >= SIZ) {
576 cprintf("452 Too many recipients\r\n");
581 if ( (!CC->logged_in) /* Don't RBL authenticated users */
582 && (!sSMTP->is_lmtp) ) { /* Don't RBL LMTP clients */
583 if (config.c_rbl_at_greeting == 0) { /* Don't RBL again if we already did it */
584 if (rbl_check(message_to_spammer)) {
585 if (server_shutting_down)
586 cprintf("421 %s\r\n", message_to_spammer);
588 cprintf("550 %s\r\n", message_to_spammer);
589 /* no need to free_recipients(valid), it's not allocated yet */
595 valid = validate_recipients(recp,
596 smtp_get_Recipients (),
597 (sSMTP->is_lmtp)? POST_LMTP:
598 (CC->logged_in)? POST_LOGGED_IN:
600 if (valid->num_error != 0) {
601 cprintf("550 %s\r\n", valid->errormsg);
602 free_recipients(valid);
606 if (valid->num_internet > 0) {
608 if (CtdlCheckInternetMailPermission(&CC->user)==0) {
609 cprintf("551 <%s> - you do not have permission to send Internet mail\r\n", recp);
610 free_recipients(valid);
616 if (valid->num_internet > 0) {
617 if ( (sSMTP->message_originated_locally == 0)
618 && (sSMTP->is_lmtp == 0) ) {
619 cprintf("551 <%s> - relaying denied\r\n", recp);
620 free_recipients(valid);
625 cprintf("250 RCPT ok <%s>\r\n", recp);
626 if (!IsEmptyStr(sSMTP->recipients)) {
627 strcat(sSMTP->recipients, ",");
629 strcat(sSMTP->recipients, recp);
630 sSMTP->number_of_recipients += 1;
632 free_recipients(valid);
640 * Implements the DATA command
642 void smtp_data(void) {
644 char *defbody; //TODO: remove me
645 struct CtdlMessage *msg = NULL;
648 struct recptypes *valid;
652 citsmtp *sSMTP = SMTP;
654 if (IsEmptyStr(sSMTP->from)) {
655 cprintf("503 Need MAIL command first.\r\n");
659 if (sSMTP->number_of_recipients < 1) {
660 cprintf("503 Need RCPT command first.\r\n");
664 cprintf("354 Transmit message now - terminate with '.' by itself\r\n");
666 datestring(nowstamp, sizeof nowstamp, time(NULL), DATESTRING_RFC822);
667 defbody = malloc(4096);
669 if (defbody != NULL) {
670 if (sSMTP->is_lmtp && (CC->cs_UDSclientUID != -1)) {
671 snprintf(defbody, 4096,
672 "Received: from %s (Citadel from userid %ld)\n"
675 (long int) CC->cs_UDSclientUID,
680 snprintf(defbody, 4096,
681 "Received: from %s (%s [%s])\n"
690 body = CtdlReadMessageBodyBuf(HKEY("."), config.c_maxmsglen, defbody, 1, NULL);
692 cprintf("550 Unable to save message: internal error.\r\n");
696 syslog(LOG_DEBUG, "Converting message...\n");
697 msg = convert_internet_message_buf(&body);
699 /* If the user is locally authenticated, FORCE the From: header to
700 * show up as the real sender. Yes, this violates the RFC standard,
701 * but IT MAKES SENSE. If you prefer strict RFC adherence over
702 * common sense, you can disable this in the configuration.
704 * We also set the "message room name" ('O' field) to MAILROOM
705 * (which is Mail> on most systems) to prevent it from getting set
706 * to something ugly like "0000058008.Sent Items>" when the message
707 * is read with a Citadel client.
709 if ( (CC->logged_in) && (config.c_rfc822_strict_from == 0) ) {
710 if (msg->cm_fields['A'] != NULL) free(msg->cm_fields['A']);
711 if (msg->cm_fields['N'] != NULL) free(msg->cm_fields['N']);
712 if (msg->cm_fields['H'] != NULL) free(msg->cm_fields['H']);
713 if (msg->cm_fields['F'] != NULL) free(msg->cm_fields['F']);
714 if (msg->cm_fields['O'] != NULL) free(msg->cm_fields['O']);
715 msg->cm_fields['A'] = strdup(CC->user.fullname);
716 msg->cm_fields['N'] = strdup(config.c_nodename);
717 msg->cm_fields['H'] = strdup(config.c_humannode);
718 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
719 msg->cm_fields['O'] = strdup(MAILROOM);
722 /* Set the "envelope from" address */
723 if (msg->cm_fields['P'] != NULL) {
724 free(msg->cm_fields['P']);
726 msg->cm_fields['P'] = strdup(sSMTP->from);
728 /* Set the "envelope to" address */
729 if (msg->cm_fields['V'] != NULL) {
730 free(msg->cm_fields['V']);
732 msg->cm_fields['V'] = strdup(sSMTP->recipients);
734 /* Submit the message into the Citadel system. */
735 valid = validate_recipients(sSMTP->recipients,
736 smtp_get_Recipients (),
737 (sSMTP->is_lmtp)? POST_LMTP:
738 (CC->logged_in)? POST_LOGGED_IN:
741 /* If there are modules that want to scan this message before final
742 * submission (such as virus checkers or spam filters), call them now
743 * and give them an opportunity to reject the message.
745 if (sSMTP->is_unfiltered) {
749 scan_errors = PerformMessageHooks(msg, EVT_SMTPSCAN);
752 if (scan_errors > 0) { /* We don't want this message! */
754 if (msg->cm_fields['0'] == NULL) {
755 msg->cm_fields['0'] = strdup("Message rejected by filter");
758 sprintf(result, "550 %s\r\n", msg->cm_fields['0']);
761 else { /* Ok, we'll accept this message. */
762 msgnum = CtdlSubmitMsg(msg, valid, "", 0);
764 sprintf(result, "250 Message accepted.\r\n");
767 sprintf(result, "550 Internal delivery error\r\n");
771 /* For SMTP and ESTMP, just print the result message. For LMTP, we
772 * have to print one result message for each recipient. Since there
773 * is nothing in Citadel which would cause different recipients to
774 * have different results, we can get away with just spitting out the
775 * same message once for each recipient.
777 if (sSMTP->is_lmtp) {
778 for (i=0; i<sSMTP->number_of_recipients; ++i) {
779 cprintf("%s", result);
783 cprintf("%s", result);
786 /* Write something to the syslog(which may or may not be where the
787 * rest of the Citadel logs are going; some sysadmins want LOG_MAIL).
789 syslog((LOG_MAIL | LOG_INFO),
790 "%ld: from=<%s>, nrcpts=%d, relay=%s [%s], stat=%s",
793 sSMTP->number_of_recipients,
800 CtdlFreeMessage(msg);
801 free_recipients(valid);
802 smtp_data_clear(); /* clear out the buffers now */
807 * implements the STARTTLS command (Citadel API version)
809 void smtp_starttls(void)
811 char ok_response[SIZ];
812 char nosup_response[SIZ];
813 char error_response[SIZ];
816 "220 Begin TLS negotiation now\r\n");
817 sprintf(nosup_response,
818 "554 TLS not supported here\r\n");
819 sprintf(error_response,
820 "554 Internal error\r\n");
821 CtdlModuleStartCryptoMsgs(ok_response, nosup_response, error_response);
828 * Main command loop for SMTP sessions.
830 void smtp_command_loop(void) {
832 citsmtp *sSMTP = SMTP;
835 syslog(LOG_EMERG, "Session SMTP data is null. WTF? We will crash now.\n");
839 memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
840 if (client_getln(cmdbuf, sizeof cmdbuf) < 1) {
841 syslog(LOG_CRIT, "SMTP: client disconnected: ending session.\n");
842 CC->kill_me = KILLME_CLIENT_DISCONNECTED;
845 syslog(LOG_INFO, "SMTP server: %s\n", cmdbuf);
846 while (strlen(cmdbuf) < 5) strcat(cmdbuf, " ");
848 if (sSMTP->command_state == smtp_user) {
849 smtp_get_user(cmdbuf);
852 else if (sSMTP->command_state == smtp_password) {
853 smtp_get_pass(cmdbuf);
856 else if (sSMTP->command_state == smtp_plain) {
857 smtp_try_plain(cmdbuf);
860 else if (!strncasecmp(cmdbuf, "AUTH", 4)) {
861 smtp_auth(&cmdbuf[5]);
864 else if (!strncasecmp(cmdbuf, "DATA", 4)) {
868 else if (!strncasecmp(cmdbuf, "HELO", 4)) {
869 smtp_hello(&cmdbuf[5], 0);
872 else if (!strncasecmp(cmdbuf, "EHLO", 4)) {
873 smtp_hello(&cmdbuf[5], 1);
876 else if (!strncasecmp(cmdbuf, "LHLO", 4)) {
877 smtp_hello(&cmdbuf[5], 2);
880 else if (!strncasecmp(cmdbuf, "HELP", 4)) {
884 else if (!strncasecmp(cmdbuf, "MAIL", 4)) {
885 smtp_mail(&cmdbuf[5]);
888 else if (!strncasecmp(cmdbuf, "NOOP", 4)) {
889 cprintf("250 NOOP\r\n");
892 else if (!strncasecmp(cmdbuf, "QUIT", 4)) {
893 cprintf("221 Goodbye...\r\n");
894 CC->kill_me = KILLME_CLIENT_LOGGED_OUT;
898 else if (!strncasecmp(cmdbuf, "RCPT", 4)) {
899 smtp_rcpt(&cmdbuf[5]);
902 else if (!strncasecmp(cmdbuf, "RSET", 4)) {
906 else if (!strcasecmp(cmdbuf, "STARTTLS")) {
911 cprintf("502 I'm afraid I can't do that.\r\n");
924 /*****************************************************************************/
925 /* MODULE INITIALIZATION STUFF */
926 /*****************************************************************************/
928 * This cleanup function blows away the temporary memory used by
931 void smtp_cleanup_function(void) {
933 /* Don't do this stuff if this is not an SMTP session! */
934 if (CC->h_command_function != smtp_command_loop) return;
936 syslog(LOG_DEBUG, "Performing SMTP cleanup hook\n");
942 const char *CitadelServiceSMTP_MTA="SMTP-MTA";
943 const char *CitadelServiceSMTPS_MTA="SMTPs-MTA";
944 const char *CitadelServiceSMTP_MSA="SMTP-MSA";
945 const char *CitadelServiceSMTP_LMTP="LMTP";
946 const char *CitadelServiceSMTP_LMTP_UNF="LMTP-UnF";
948 CTDL_MODULE_INIT(smtp)
952 CtdlRegisterServiceHook(config.c_smtp_port, /* SMTP MTA */
957 CitadelServiceSMTP_MTA);
960 CtdlRegisterServiceHook(config.c_smtps_port,
965 CitadelServiceSMTPS_MTA);
968 CtdlRegisterServiceHook(config.c_msa_port, /* SMTP MSA */
973 CitadelServiceSMTP_MSA);
975 CtdlRegisterServiceHook(0, /* local LMTP */
980 CitadelServiceSMTP_LMTP);
982 CtdlRegisterServiceHook(0, /* local LMTP */
983 file_lmtp_unfiltered_socket,
984 lmtp_unfiltered_greeting,
987 CitadelServiceSMTP_LMTP_UNF);
989 CtdlRegisterSessionHook(smtp_cleanup_function, EVT_STOP);
992 /* return our Subversion id for the Log */