We recently updated to Amavisd 2.10.1 from 2.9.0 internally, and have found
that amavisd constantly dies while processing messages after being put
under a moderate load in our QA environment.
For example, here is postfix passing off the email to amavisd:
Jan 19 06:57:42 zqa-211 postfix/smtp[24983]: 84B33102BD3:
to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10024,
delay=32179, delays=32178/0.01/0.01/0.22, dsn=4.4.2, status=
deferred (lost connection with 127.0.0.1[127.0.0.1] while sending end of
data -- message may be sent more than once)
Here we can see amavis accept it, and then die:
Jan 19 06:57:42 zqa-211 amavis[13724]: (13724-01) ESMTP [127.0.0.1]:10024
/opt/zimbra/data/amavisd/tmp/amavis-20160119T065742-13724-gste5uOH:
<[email protected]> -> <user543@zqa-
211.eng.zimbra.com> SIZE=23143 Received: from zqa-211.eng.zimbra.com
([127.0.0.1]) by localhost (zqa-211.eng.zimbra.com [127.0.0.1])
(amavisd-new, port 10024) with ESMTP for <user543@zqa-21
1.eng.zimbra.com>; Tue, 19 Jan 2016 06:57:42 -0800 (PST)
Jan 19 06:57:42 zqa-211 amavis[13724]: (13724-01) Checking: iugKoVQZWTPd
[10.15.32.142] <[email protected]> ->
<[email protected]>
Jan 19 06:57:52 zqa-211 amavis-services[18544]: PID 13724 went away,
13724-01
I.e., it appears amavisd 2.10.1 is completely unstable and unsuable. Does
anyone know of any good methods to determine why it's croaking under a
moderate load. This does not occur under a light load. We've now have a
6% failure rate of mail delivery with this version. In our test, we are
simply simulating having 30 users doing cross-emails, so about 9500 emails
over the course of 15 minutes, or about 100 emails a second, which is not a
particularly heavy load. We did not see this occur *at all* under 2.9.0.
Thanks,
Quanah
--
Quanah Gibson-Mount
Platform Architect
Zimbra, Inc.
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