Path: utzoo!attcan!uunet!mcvax!ukc!etive!glasgow!andrew
From: andrew@stl.stc.co.uk (Andrew Macpherson)
Newsgroups: comp.mail.sendmail,mail.uk-sendmail-workers
Subject: Re:  Sendmail problems
Message-ID: <8907251709.5995@stl.stc.co.uk>
Date: 25 Jul 89 17:09:31 GMT
Sender: daemon@cs.glasgow.ac.uk
Lines: 57
In-Reply-To: Message from "Steve Platt" of 25 Jul 89, 5:28 pm
Organisation: STC Technology, London Road, HARLOW, Essex England, CM17 9NA
Phone: 	+44 279 29531 ext 2423
Telex: 	81151 stl hw g

| 
| It seemed (sometimes at least) to be related to "domain unknown" errors.
| The most recent example looked like an attempt for our
| system to send a "return receipt" acknowledgement to an
| address with no known domain in it - instead of the local
| postmaster getting sent a "domain unknown" error report
| mailed back, sendmail coredumped.
| 
| We also noticed that users "mailing" to unknown domains
| using Mail got the "domain unknown" message from sendmail
| printed on their terminal then instead of a dead.letter
| file or a return mail message, there was nothing - just
| another "df" file in mqueue; and if the user concerned
| was in fact root, then a "core" file too.

There is a known bug, if you are copying errors to postmaster:

andrew.findlay@ Fri Feb 10 11:47:00 1989
To: andrew@stl
Subject: Patch for Sendmail

5.61 has the same strcmp(NULL) bug that the previous version did.
Any bounced mail causes a seg violation on a Sun. Patch follows:

*** savemail.c.BAD	Sat Feb  4 15:55:42 1989
--- savemail.c	Fri Feb 10 10:49:40 1989
***************
*** 406,412 ****
  	to = buf;
  	for (q = returnq; q != NULL; q = q->q_next) {
  	    if (q->q_alias == NULL)
! 		if (strcmp(q->q_paddr, PostMasterCopy) == 0)
  		    cc = q->q_paddr;
  		else {
  		    /* Not Postmaster; already on the To: line? */
--- 406,413 ----
  	to = buf;
  	for (q = returnq; q != NULL; q = q->q_next) {
  	    if (q->q_alias == NULL)
! 		if ( (PostMasterCopy!=NULL) &&
! 		     (strcmp(q->q_paddr, PostMasterCopy) == 0))
  		    cc = q->q_paddr;
  		else {
  		    /* Not Postmaster; already on the To: line? */


---------------------------------------------------------------------
|  From Andrew Findlay at Brunel University, Uxbridge, UB8 3PH, UK  |
|  Andrew.Findlay@brunel.ac.uk          phone: +44 895 74000 x2512  |
---------------------------------------------------------------------


-- 
Andrew Macpherson                          PSI%234237100122::andrew
andrew@stl.stc.co.uk        - or -         ...!mcvax!ukc!stl!andrew
"It is always a great mistake to treat the individual on the chance
that he may become a crowd" -- Mr Justice Codd: (A.P.Herbert)