You have been subscribed to a public bug:
The mail server (raring 13.04 headless) is getting a dictionary attack
and saslauthd is crashing with fault in libc
thus;
/var/log/auth.log
Jun 3 11:27:41 ubuntu saslauthd[26789]: do_auth : auth failure:
[user=admin] [service=smtp] [realm=] [$
Jun 3 11:27:44 ubuntu saslauthd[26790]: do_auth : auth failure:
[user=test] [service=smtp] [realm=] [m$
Jun 3 11:27:48 ubuntu saslauthd[26793]: do_auth : auth failure:
[user=www] [service=smtp] [realm=] [me$
Jun 3 11:27:51 ubuntu saslauthd[26789]: do_auth : auth failure:
[user=testuser] [service=smtp] [realm=$
Jun 3 11:27:54 ubuntu saslauthd[26790]: do_auth : auth failure:
[user=webadmin] [service=smtp] [realm=$
/var/log/mail.log
Jun 3 11:27:41 ubuntu postfix/smtpd[1324]: warning:
mail.yokozunanet.mn[203.34.37.30]: SASL LOGIN authenticati$
Jun 3 11:27:42 ubuntu postfix/smtpd[1327]: connect from
mail.yokozunanet.mn[203.34.37.30]
Jun 3 11:27:44 ubuntu postfix/smtpd[1327]: warning:
mail.yokozunanet.mn[203.34.37.30]: SASL LOGIN authenticati$
Jun 3 11:27:45 ubuntu postfix/smtpd[1328]: connect from
mail.yokozunanet.mn[203.34.37.30]
Jun 3 11:27:48 ubuntu postfix/smtpd[1328]: warning:
mail.yokozunanet.mn[203.34.37.30]: SASL LOGIN authenticati$
Jun 3 11:27:49 ubuntu postfix/smtpd[1330]: connect from
mail.yokozunanet.mn[203.34.37.30]
Jun 3 11:27:51 ubuntu postfix/smtpd[1330]: warning:
mail.yokozunanet.mn[203.34.37.30]: SASL LOGIN authenticati$
Jun 3 11:27:52 ubuntu postfix/smtpd[1335]: connect from
mail.yokozunanet.mn[203.34.37.30]
Jun 3 11:27:54 ubuntu postfix/smtpd[1335]: warning:
mail.yokozunanet.mn[203.34.37.30]: SASL LOGIN authenticati$
After a time saslauthd service dies, this is from dmesg
[775847.232115] saslauthd[26791]: segfault at 0 ip b71de6f1 sp bfcd2d9c error 4
in libc-2.17.so[b7160000+1ad000]
[775856.870264] saslauthd[26790]: segfault at 0 ip b71de6f1 sp bfcd2d9c error 4
in libc-2.17.so[b7160000+1ad000]
[775876.100629] saslauthd[26789]: segfault at 0 ip b71de6f1 sp bfcd2d9c error 4
in libc-2.17.so[b7160000+1ad000]
[775882.604389] saslauthd[26793]: segfault at 0 ip b71de6f1 sp bfcd2d9c error 4
in libc-2.17.so[b7160000+1ad000]
[775915.757471] saslauthd[26792]: segfault at 0 ip b71de6f1 sp bfcd2d9c error 4
in libc-2.17.so[b7160000+1ad000]
uname
Linux ubuntu 3.8.0-22-generic #33-Ubuntu SMP Thu May 16 15:17:59 UTC 2013 i686
i686 i686 GNU/Linux
** Affects: cyrus-sasl2 (Ubuntu)
Importance: Undecided
Status: New
--
saslauthd[26791]: segfault at 0 ip b71de6f1 sp bfcd2d9c error 4 in
libc-2.17.so[b7160000+1ad000]
https://bugs.launchpad.net/bugs/1187001
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