1 /*
2  * Copyright (c) 1983 Eric P. Allman
3  * Copyright (c) 1988 Regents of the University of California.
4  * All rights reserved.
5  *
6  * %sccs.include.redist.c%
7  */
8 
9 # include "sendmail.h"
10 
11 #ifndef lint
12 #ifdef SMTP
13 static char sccsid[] = "@(#)srvrsmtp.c	6.25 (Berkeley) 03/18/93 (with SMTP)";
14 #else
15 static char sccsid[] = "@(#)srvrsmtp.c	6.25 (Berkeley) 03/18/93 (without SMTP)";
16 #endif
17 #endif /* not lint */
18 
19 # include <errno.h>
20 # include <signal.h>
21 
22 # ifdef SMTP
23 
24 /*
25 **  SMTP -- run the SMTP protocol.
26 **
27 **	Parameters:
28 **		none.
29 **
30 **	Returns:
31 **		never.
32 **
33 **	Side Effects:
34 **		Reads commands from the input channel and processes
35 **			them.
36 */
37 
38 struct cmd
39 {
40 	char	*cmdname;	/* command name */
41 	int	cmdcode;	/* internal code, see below */
42 };
43 
44 /* values for cmdcode */
45 # define CMDERROR	0	/* bad command */
46 # define CMDMAIL	1	/* mail -- designate sender */
47 # define CMDRCPT	2	/* rcpt -- designate recipient */
48 # define CMDDATA	3	/* data -- send message text */
49 # define CMDRSET	4	/* rset -- reset state */
50 # define CMDVRFY	5	/* vrfy -- verify address */
51 # define CMDEXPN	6	/* expn -- expand address */
52 # define CMDNOOP	7	/* noop -- do nothing */
53 # define CMDQUIT	8	/* quit -- close connection and die */
54 # define CMDHELO	9	/* helo -- be polite */
55 # define CMDHELP	10	/* help -- give usage info */
56 # define CMDEHLO	11	/* ehlo -- extended helo (RFC 1425) */
57 /* non-standard commands */
58 # define CMDONEX	16	/* onex -- sending one transaction only */
59 # define CMDVERB	17	/* verb -- go into verbose mode */
60 /* debugging-only commands, only enabled if SMTPDEBUG is defined */
61 # define CMDDBGQSHOW	24	/* showq -- show send queue */
62 # define CMDDBGDEBUG	25	/* debug -- set debug mode */
63 
64 static struct cmd	CmdTab[] =
65 {
66 	"mail",		CMDMAIL,
67 	"rcpt",		CMDRCPT,
68 	"data",		CMDDATA,
69 	"rset",		CMDRSET,
70 	"vrfy",		CMDVRFY,
71 	"expn",		CMDEXPN,
72 	"help",		CMDHELP,
73 	"noop",		CMDNOOP,
74 	"quit",		CMDQUIT,
75 	"helo",		CMDHELO,
76 	"ehlo",		CMDEHLO,
77 	"verb",		CMDVERB,
78 	"onex",		CMDONEX,
79 	/*
80 	 * remaining commands are here only
81 	 * to trap and log attempts to use them
82 	 */
83 	"showq",	CMDDBGQSHOW,
84 	"debug",	CMDDBGDEBUG,
85 	NULL,		CMDERROR,
86 };
87 
88 bool	InChild = FALSE;		/* true if running in a subprocess */
89 bool	OneXact = FALSE;		/* one xaction only this run */
90 
91 #define EX_QUIT		22		/* special code for QUIT command */
92 
93 smtp(e)
94 	register ENVELOPE *e;
95 {
96 	register char *p;
97 	register struct cmd *c;
98 	char *cmd;
99 	static char *skipword();
100 	auto ADDRESS *vrfyqueue;
101 	ADDRESS *a;
102 	char *sendinghost;
103 	bool gotmail;			/* mail command received */
104 	bool gothello;			/* helo command received */
105 	bool vrfy;			/* set if this is a vrfy command */
106 	char *protocol;			/* sending protocol */
107 	long msize;			/* approximate maximum message size */
108 	auto char *delimptr;
109 	char inp[MAXLINE];
110 	char cmdbuf[MAXLINE];
111 	char hostbuf[MAXNAME];
112 	extern char Version[];
113 	extern char *macvalue();
114 	extern ADDRESS *recipient();
115 	extern ENVELOPE BlankEnvelope;
116 	extern ENVELOPE *newenvelope();
117 	extern char *inet_ntoa();
118 
119 	if (OutChannel != stdout)
120 	{
121 		/* arrange for debugging output to go to remote host */
122 		(void) close(1);
123 		(void) dup(fileno(OutChannel));
124 	}
125 	settime(e);
126 	CurHostName = RealHostName;
127 	setproctitle("srvrsmtp %s", CurHostName);
128 	expand("\201e", inp, &inp[sizeof inp], e);
129 	message("220 %s", inp);
130 	SmtpPhase = "startup";
131 	sendinghost = NULL;
132 	protocol = NULL;
133 	gothello = FALSE;
134 	gotmail = FALSE;
135 	for (;;)
136 	{
137 		/* arrange for backout */
138 		if (setjmp(TopFrame) > 0 && InChild)
139 			finis();
140 		QuickAbort = FALSE;
141 		HoldErrs = FALSE;
142 		LogUsrErrs = FALSE;
143 		e->e_flags &= ~EF_VRFYONLY;
144 
145 		/* setup for the read */
146 		e->e_to = NULL;
147 		Errors = 0;
148 		(void) fflush(stdout);
149 
150 		/* read the input line */
151 		p = sfgets(inp, sizeof inp, InChannel, TimeOuts.to_nextcommand);
152 
153 		/* handle errors */
154 		if (p == NULL)
155 		{
156 			/* end of file, just die */
157 			message("421 %s Lost input channel from %s",
158 				MyHostName, CurHostName);
159 #ifdef LOG
160 			if (LogLevel > 1)
161 				syslog(LOG_NOTICE, "lost input channel from %s",
162 					CurHostName);
163 #endif
164 			if (InChild)
165 				ExitStat = EX_QUIT;
166 			finis();
167 		}
168 
169 		/* clean up end of line */
170 		fixcrlf(inp, TRUE);
171 
172 		/* echo command to transcript */
173 		if (e->e_xfp != NULL)
174 			fprintf(e->e_xfp, "<<< %s\n", inp);
175 
176 		/* break off command */
177 		for (p = inp; isascii(*p) && isspace(*p); p++)
178 			continue;
179 		cmd = cmdbuf;
180 		while (*p != '\0' &&
181 		       !(isascii(*p) && isspace(*p)) &&
182 		       cmd < &cmdbuf[sizeof cmdbuf - 2])
183 			*cmd++ = *p++;
184 		*cmd = '\0';
185 
186 		/* throw away leading whitespace */
187 		while (isascii(*p) && isspace(*p))
188 			p++;
189 
190 		/* decode command */
191 		for (c = CmdTab; c->cmdname != NULL; c++)
192 		{
193 			if (!strcasecmp(c->cmdname, cmdbuf))
194 				break;
195 		}
196 
197 		/* reset errors */
198 		errno = 0;
199 
200 		/* process command */
201 		switch (c->cmdcode)
202 		{
203 		  case CMDHELO:		/* hello -- introduce yourself */
204 		  case CMDEHLO:		/* extended hello */
205 			if (c->cmdcode == CMDEHLO)
206 			{
207 				protocol = "ESMTP";
208 				SmtpPhase = "EHLO";
209 			}
210 			else
211 			{
212 				protocol = "SMTP";
213 				SmtpPhase = "HELO";
214 			}
215 			setproctitle("%s: %s", CurHostName, inp);
216 			if (strcasecmp(p, MyHostName) == 0)
217 			{
218 				/*
219 				**  Didn't know about alias or MX,
220 				**  or connected to an echo server
221 				*/
222 
223 				message("553 %s config error: mail loops back to myself",
224 					MyHostName);
225 				break;
226 			}
227 			(void) strcpy(hostbuf, p);
228 			(void) strcat(hostbuf, " (");
229 			(void) strcat(hostbuf, inet_ntoa(RealHostAddr.sin_addr));
230 			if (strcasecmp(p, RealHostName) != 0)
231 			{
232 				(void) strcat(hostbuf, "; ");
233 				(void) strcat(hostbuf, RealHostName);
234 			}
235 			(void) strcat(hostbuf, ")");
236 			sendinghost = newstr(hostbuf);
237 
238 			/* send ext. message -- old systems must ignore */
239 			message("250-%s Hello %s, pleased to meet you",
240 				MyHostName, sendinghost);
241 			if (!bitset(PRIV_NOEXPN, PrivacyFlags))
242 				message("250-EXPN");
243 			message("250-SIZE");
244 			message("250 HELP");
245 			gothello = TRUE;
246 			break;
247 
248 		  case CMDMAIL:		/* mail -- designate sender */
249 			SmtpPhase = "MAIL";
250 
251 			/* force a sending host even if no HELO given */
252 			if (sendinghost == NULL && macvalue('s', e) == NULL)
253 				sendinghost = RealHostName;
254 
255 			/* check for validity of this command */
256 			if (!gothello && bitset(PRIV_NEEDMAILHELO, PrivacyFlags))
257 			{
258 				message("503 Polite people say HELO first");
259 				break;
260 			}
261 			if (gotmail)
262 			{
263 				message("503 Sender already specified");
264 				break;
265 			}
266 			if (InChild)
267 			{
268 				errno = 0;
269 				syserr("503 Nested MAIL command: MAIL %s", p);
270 				finis();
271 			}
272 
273 			/* fork a subprocess to process this command */
274 			if (runinchild("SMTP-MAIL", e) > 0)
275 				break;
276 			if (sendinghost != NULL)
277 				define('s', sendinghost, e);
278 			if (protocol == NULL)
279 				protocol = "SMTP";
280 			define('r', protocol, e);
281 			initsys(e);
282 			setproctitle("%s %s: %s", e->e_id, CurHostName, inp);
283 
284 			/* child -- go do the processing */
285 			p = skipword(p, "from");
286 			if (p == NULL)
287 				break;
288 			if (setjmp(TopFrame) > 0)
289 			{
290 				/* this failed -- undo work */
291 				if (InChild)
292 					finis();
293 				break;
294 			}
295 			QuickAbort = TRUE;
296 
297 			/* must parse sender first */
298 			delimptr = NULL;
299 			setsender(p, e, &delimptr, FALSE);
300 			p = delimptr;
301 			if (p != NULL && *p != '\0')
302 				*p++ = '\0';
303 
304 			/* now parse ESMTP arguments */
305 			msize = 0;
306 			for (; p != NULL && *p != '\0'; p++)
307 			{
308 				char *kp;
309 				char *vp;
310 
311 				/* locate the beginning of the keyword */
312 				while (isascii(*p) && isspace(*p))
313 					p++;
314 				if (*p == '\0')
315 					break;
316 				kp = p;
317 
318 				/* skip to the value portion */
319 				while (isascii(*p) && isalnum(*p) || *p == '-')
320 					p++;
321 				if (*p == '=')
322 				{
323 					*p++ = '\0';
324 					vp = p;
325 
326 					/* skip to the end of the value */
327 					while (*p != '\0' && *p != ' ' &&
328 					       !(isascii(*p) && iscntrl(*p)) &&
329 					       *p != '=')
330 						p++;
331 				}
332 
333 				if (*p != '\0')
334 					*p++ = '\0';
335 
336 				if (tTd(19, 1))
337 					printf("MAIL: got arg %s=%s\n", kp,
338 						vp == NULL ? "<null>" : vp);
339 
340 				if (strcasecmp(kp, "size") == 0)
341 				{
342 					if (kp == NULL)
343 					{
344 						usrerr("501 SIZE requires a value");
345 						/* NOTREACHED */
346 					}
347 					msize = atol(vp);
348 				}
349 				else
350 				{
351 					usrerr("501 %s parameter unrecognized", kp);
352 					/* NOTREACHED */
353 				}
354 			}
355 
356 			if (!enoughspace(msize))
357 			{
358 				message("452 Insufficient disk space; try again later");
359 				break;
360 			}
361 			message("250 Sender ok");
362 			gotmail = TRUE;
363 			break;
364 
365 		  case CMDRCPT:		/* rcpt -- designate recipient */
366 			SmtpPhase = "RCPT";
367 			setproctitle("%s %s: %s", e->e_id, CurHostName, inp);
368 			if (setjmp(TopFrame) > 0)
369 			{
370 				e->e_flags &= ~EF_FATALERRS;
371 				break;
372 			}
373 			QuickAbort = TRUE;
374 			LogUsrErrs = TRUE;
375 
376 			/* optimization -- if queueing, don't expand aliases */
377 			if (SendMode == SM_QUEUE)
378 				e->e_flags |= EF_VRFYONLY;
379 
380 			p = skipword(p, "to");
381 			if (p == NULL)
382 				break;
383 			a = parseaddr(p, (ADDRESS *) NULL, 1, ' ', NULL, e);
384 			if (a == NULL)
385 				break;
386 			a->q_flags |= QPRIMARY;
387 			a = recipient(a, &e->e_sendqueue, e);
388 			if (Errors != 0)
389 				break;
390 
391 			/* no errors during parsing, but might be a duplicate */
392 			e->e_to = p;
393 			if (!bitset(QBADADDR, a->q_flags))
394 				message("250 Recipient ok");
395 			else
396 			{
397 				/* punt -- should keep message in ADDRESS.... */
398 				message("550 Addressee unknown");
399 			}
400 			e->e_to = NULL;
401 			break;
402 
403 		  case CMDDATA:		/* data -- text of mail */
404 			SmtpPhase = "DATA";
405 			if (!gotmail)
406 			{
407 				message("503 Need MAIL command");
408 				break;
409 			}
410 			else if (e->e_nrcpts <= 0)
411 			{
412 				message("503 Need RCPT (recipient)");
413 				break;
414 			}
415 
416 			/* collect the text of the message */
417 			SmtpPhase = "collect";
418 			setproctitle("%s %s: %s", e->e_id, CurHostName, inp);
419 			collect(TRUE, e);
420 			if (Errors != 0)
421 				break;
422 
423 			/*
424 			**  Arrange to send to everyone.
425 			**	If sending to multiple people, mail back
426 			**		errors rather than reporting directly.
427 			**	In any case, don't mail back errors for
428 			**		anything that has happened up to
429 			**		now (the other end will do this).
430 			**	Truncate our transcript -- the mail has gotten
431 			**		to us successfully, and if we have
432 			**		to mail this back, it will be easier
433 			**		on the reader.
434 			**	Then send to everyone.
435 			**	Finally give a reply code.  If an error has
436 			**		already been given, don't mail a
437 			**		message back.
438 			**	We goose error returns by clearing error bit.
439 			*/
440 
441 			SmtpPhase = "delivery";
442 			if (e->e_nrcpts != 1)
443 			{
444 				HoldErrs = TRUE;
445 				ErrorMode = EM_MAIL;
446 			}
447 			e->e_flags &= ~EF_FATALERRS;
448 			e->e_xfp = freopen(queuename(e, 'x'), "w", e->e_xfp);
449 
450 			/* send to all recipients */
451 			sendall(e, SM_DEFAULT);
452 			e->e_to = NULL;
453 
454 			/* save statistics */
455 			markstats(e, (ADDRESS *) NULL);
456 
457 			/* issue success if appropriate and reset */
458 			if (Errors == 0 || HoldErrs)
459 				message("250 Ok");
460 			else
461 				e->e_flags &= ~EF_FATALERRS;
462 
463 			/* if in a child, pop back to our parent */
464 			if (InChild)
465 				finis();
466 
467 			/* clean up a bit */
468 			gotmail = FALSE;
469 			dropenvelope(e);
470 			CurEnv = e = newenvelope(e, CurEnv);
471 			e->e_flags = BlankEnvelope.e_flags;
472 			break;
473 
474 		  case CMDRSET:		/* rset -- reset state */
475 			message("250 Reset state");
476 			if (InChild)
477 				finis();
478 
479 			/* clean up a bit */
480 			gotmail = FALSE;
481 			dropenvelope(e);
482 			CurEnv = e = newenvelope(e, CurEnv);
483 			break;
484 
485 		  case CMDVRFY:		/* vrfy -- verify address */
486 		  case CMDEXPN:		/* expn -- expand address */
487 			vrfy = c->cmdcode == CMDVRFY;
488 			if (bitset(vrfy ? PRIV_NOVRFY : PRIV_NOEXPN,
489 						PrivacyFlags))
490 			{
491 				if (vrfy)
492 					message("252 Who's to say?");
493 				else
494 					message("502 That's none of your business");
495 				break;
496 			}
497 			else if (!gothello &&
498 				 bitset(vrfy ? PRIV_NEEDVRFYHELO : PRIV_NEEDEXPNHELO,
499 						PrivacyFlags))
500 			{
501 				message("503 I demand that you introduce yourself first");
502 				break;
503 			}
504 			if (runinchild(vrfy ? "SMTP-VRFY" : "SMTP-EXPN", e) > 0)
505 				break;
506 			setproctitle("%s: %s", CurHostName, inp);
507 #ifdef LOG
508 			if (LogLevel > 5)
509 				syslog(LOG_INFO, "%s: %s", CurHostName, inp);
510 #endif
511 			vrfyqueue = NULL;
512 			QuickAbort = TRUE;
513 			if (vrfy)
514 				e->e_flags |= EF_VRFYONLY;
515 			(void) sendtolist(p, (ADDRESS *) NULL, &vrfyqueue, e);
516 			if (Errors != 0)
517 			{
518 				if (InChild)
519 					finis();
520 				break;
521 			}
522 			while (vrfyqueue != NULL)
523 			{
524 				register ADDRESS *a = vrfyqueue->q_next;
525 				char *code;
526 
527 				while (a != NULL && bitset(QDONTSEND|QBADADDR, a->q_flags))
528 					a = a->q_next;
529 
530 				if (!bitset(QDONTSEND|QBADADDR, vrfyqueue->q_flags))
531 					printvrfyaddr(vrfyqueue, a == NULL);
532 				else if (a == NULL)
533 					message("554 Self destructive alias loop");
534 				vrfyqueue = a;
535 			}
536 			if (InChild)
537 				finis();
538 			break;
539 
540 		  case CMDHELP:		/* help -- give user info */
541 			help(p);
542 			break;
543 
544 		  case CMDNOOP:		/* noop -- do nothing */
545 			message("200 OK");
546 			break;
547 
548 		  case CMDQUIT:		/* quit -- leave mail */
549 			message("221 %s closing connection", MyHostName);
550 			if (InChild)
551 				ExitStat = EX_QUIT;
552 			finis();
553 
554 		  case CMDVERB:		/* set verbose mode */
555 			Verbose = TRUE;
556 			SendMode = SM_DELIVER;
557 			message("200 Verbose mode");
558 			break;
559 
560 		  case CMDONEX:		/* doing one transaction only */
561 			OneXact = TRUE;
562 			message("200 Only one transaction");
563 			break;
564 
565 # ifdef SMTPDEBUG
566 		  case CMDDBGQSHOW:	/* show queues */
567 			printf("Send Queue=");
568 			printaddr(e->e_sendqueue, TRUE);
569 			break;
570 
571 		  case CMDDBGDEBUG:	/* set debug mode */
572 			tTsetup(tTdvect, sizeof tTdvect, "0-99.1");
573 			tTflag(p);
574 			message("200 Debug set");
575 			break;
576 
577 # else /* not SMTPDEBUG */
578 
579 		  case CMDDBGQSHOW:	/* show queues */
580 		  case CMDDBGDEBUG:	/* set debug mode */
581 # ifdef LOG
582 			if (LogLevel > 0)
583 				syslog(LOG_NOTICE,
584 				    "\"%s\" command from %s (%s)",
585 				    c->cmdname, RealHostName,
586 				    inet_ntoa(RealHostAddr.sin_addr));
587 # endif
588 			/* FALL THROUGH */
589 # endif /* SMTPDEBUG */
590 
591 		  case CMDERROR:	/* unknown command */
592 			message("500 Command unrecognized");
593 			break;
594 
595 		  default:
596 			errno = 0;
597 			syserr("500 smtp: unknown code %d", c->cmdcode);
598 			break;
599 		}
600 	}
601 }
602 /*
603 **  SKIPWORD -- skip a fixed word.
604 **
605 **	Parameters:
606 **		p -- place to start looking.
607 **		w -- word to skip.
608 **
609 **	Returns:
610 **		p following w.
611 **		NULL on error.
612 **
613 **	Side Effects:
614 **		clobbers the p data area.
615 */
616 
617 static char *
618 skipword(p, w)
619 	register char *p;
620 	char *w;
621 {
622 	register char *q;
623 
624 	/* find beginning of word */
625 	while (isascii(*p) && isspace(*p))
626 		p++;
627 	q = p;
628 
629 	/* find end of word */
630 	while (*p != '\0' && *p != ':' && !(isascii(*p) && isspace(*p)))
631 		p++;
632 	while (isascii(*p) && isspace(*p))
633 		*p++ = '\0';
634 	if (*p != ':')
635 	{
636 	  syntax:
637 		message("501 Syntax error");
638 		Errors++;
639 		return (NULL);
640 	}
641 	*p++ = '\0';
642 	while (isascii(*p) && isspace(*p))
643 		p++;
644 
645 	/* see if the input word matches desired word */
646 	if (strcasecmp(q, w))
647 		goto syntax;
648 
649 	return (p);
650 }
651 /*
652 **  PRINTVRFYADDR -- print an entry in the verify queue
653 **
654 **	Parameters:
655 **		a -- the address to print
656 **		last -- set if this is the last one.
657 **
658 **	Returns:
659 **		none.
660 **
661 **	Side Effects:
662 **		Prints the appropriate 250 codes.
663 */
664 
665 printvrfyaddr(a, last)
666 	register ADDRESS *a;
667 	bool last;
668 {
669 	char fmtbuf[20];
670 
671 	strcpy(fmtbuf, "250");
672 	fmtbuf[3] = last ? ' ' : '-';
673 
674 	if (strchr(a->q_paddr, '<') != NULL)
675 		strcpy(&fmtbuf[4], "%s");
676 	else if (a->q_fullname == NULL)
677 		strcpy(&fmtbuf[4], "<%s>");
678 	else
679 	{
680 		strcpy(&fmtbuf[4], "%s <%s>");
681 		message(fmtbuf, a->q_fullname, a->q_paddr);
682 		return;
683 	}
684 	message(fmtbuf, a->q_paddr);
685 }
686 /*
687 **  HELP -- implement the HELP command.
688 **
689 **	Parameters:
690 **		topic -- the topic we want help for.
691 **
692 **	Returns:
693 **		none.
694 **
695 **	Side Effects:
696 **		outputs the help file to message output.
697 */
698 
699 help(topic)
700 	char *topic;
701 {
702 	register FILE *hf;
703 	int len;
704 	char buf[MAXLINE];
705 	bool noinfo;
706 
707 	if (HelpFile == NULL || (hf = fopen(HelpFile, "r")) == NULL)
708 	{
709 		/* no help */
710 		errno = 0;
711 		message("502 HELP not implemented");
712 		return;
713 	}
714 
715 	if (topic == NULL || *topic == '\0')
716 		topic = "smtp";
717 	else
718 		makelower(topic);
719 
720 	len = strlen(topic);
721 	noinfo = TRUE;
722 
723 	while (fgets(buf, sizeof buf, hf) != NULL)
724 	{
725 		if (strncmp(buf, topic, len) == 0)
726 		{
727 			register char *p;
728 
729 			p = strchr(buf, '\t');
730 			if (p == NULL)
731 				p = buf;
732 			else
733 				p++;
734 			fixcrlf(p, TRUE);
735 			message("214-%s", p);
736 			noinfo = FALSE;
737 		}
738 	}
739 
740 	if (noinfo)
741 		message("504 HELP topic unknown");
742 	else
743 		message("214 End of HELP info");
744 	(void) fclose(hf);
745 }
746 /*
747 **  RUNINCHILD -- return twice -- once in the child, then in the parent again
748 **
749 **	Parameters:
750 **		label -- a string used in error messages
751 **
752 **	Returns:
753 **		zero in the child
754 **		one in the parent
755 **
756 **	Side Effects:
757 **		none.
758 */
759 
760 runinchild(label, e)
761 	char *label;
762 	register ENVELOPE *e;
763 {
764 	int childpid;
765 
766 	if (!OneXact)
767 	{
768 		childpid = dofork();
769 		if (childpid < 0)
770 		{
771 			syserr("%s: cannot fork", label);
772 			return (1);
773 		}
774 		if (childpid > 0)
775 		{
776 			auto int st;
777 
778 			/* parent -- wait for child to complete */
779 			st = waitfor(childpid);
780 			if (st == -1)
781 				syserr("%s: lost child", label);
782 
783 			/* if we exited on a QUIT command, complete the process */
784 			if (st == (EX_QUIT << 8))
785 				finis();
786 
787 			return (1);
788 		}
789 		else
790 		{
791 			/* child */
792 			InChild = TRUE;
793 			QuickAbort = FALSE;
794 			clearenvelope(e, FALSE);
795 		}
796 	}
797 
798 	/* open alias database */
799 	initaliases(AliasFile, FALSE, e);
800 
801 	return (0);
802 }
803 
804 # endif /* SMTP */
805