While working with Cyrus 2.3.7 for email delivery via ltmpproxy, we encountered a problem where the lmtpproxy would die with a segmentation violation and these syslog messages:
Oct 5 12:57:11 ****** master[6172]: process 6700 exited, signaled to death by 11 Oct 5 12:57:11 ****** master[6172]: service lmtpunix pid 6700 in BUSY state: terminated abnormally This only happened when a message was intended for delivery to a non-existent user; messages for valid user mailboxes were delivered without problem. (We are running the Cyrus software on Red Hat Linux AS4 update 4.) Our investigation suggests this is due to a problem in the mlookup() function in the lmtp.c source file, where the "mailboxdata" data structure is referred while NULL. I've attached a patch which seems to correct the problem for us.
cyrus-2.3.7-lmtp.patch
Description: Binary data
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