I'm running a fairly typical postfix->amavisd
(spamassassin, virus scan)
-> postfix -> next mail hop dedicated filtering
system. Most of the
time everthing is working fine, but amavisd is hanging every
few days.
amavis logs are showing nothing - they just completely stop
logging.
the first problems apparent in the postfix logs are as
follows (amavisd
is on port 10024):
Sep 23 04:47:18 xxxxx.ryerson.ca postfix/smtp[1827]: [ID
197553
mail.info] 171B
5558A: to=<xxxxx ryerson.ca>,
relay=xxx.xxx.xxx.xxx[xxx.xxx.xxx.xxx]:10024, d
elay=300, delays=0.29/0/300/0, dsn=4.4.2, status=deferred
(conversation
with xxx
.xxx.xxx.xxx[xxx.xxx.xxx.xxx] timed out while receiving the
initial
server greet
ing)
I see a handful of these (fewer than my $max_servers
number), followed
by a large break in my postfix logs (the amavis logs show no
logging
after 04:42). Then:
Sep 23 05:04:50 xxxxx.ryerson.ca postfix/error[3593]: [ID
197553
mail.info] 171B5558A: to=<xxxxxryerson.ca>, relay=none,
delay=1353,
delays=1353/0/0/0.03, dsn=4.4.2, status=deferred (delivery
temporarily
suspended: conversation with
xxx.xxx.xxx.xxx[xxx.xxx.xxx.xxx] timed out
while sending end of data -- message may be sent more than
once)
I get a pile of "timed out while sending end of
data" and then it goes
back to "timed out while receiving the initial server
greeting" again.
A direct telnet to amavisd on 10024 at this point gets me a
connection,
but no banner back from amavisd.
Restarting amavisd normally gets mail flowing again, though
sometimes a
postfix reload also seems to be required.
Thoughts on what I should be looking for here? Messages in
amavis/tmp
during the "hang" can be virus scanned or
spamassassin'd manually
without troubles.
jonathan.
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