I also ran into a similar problem a while back, but in my case, I would see
multiple copies of the same email because the time out would occur after the
whole message had been transmitted, but before rcpt acknoledgement had
occurred. No messages were filtered down to me regarding mail delivery
failure, but I would assume that was happening as well like you describe.
What Jake says should fix this problem of "prefork: server
reached --max-children setting, consider raising it". I did this and also
upgraded spamassassin and clamd, both which were out of date on my system.
After making the change...
run the following 2 commands to commit the changes without having to reset
the whole system ...
svc -d /var/qmail/supervise/spamd/
svc -u /var/qmail/supervise/spamd/
Gilbert
----- Original Message -----
From: James Beam
To: [email protected]
Sent: Thursday, March 26, 2009 8:53 AM
Subject: [qmailtoaster] I am having alot of problems with mail not getting
through
I use Qmailtoaster (stock iso image install) as a front end spam/virus scan
for our Exchange system and recently we have started recieving a large
amount of non delivery errors to people outside of our domain trying to send
mail to us. Our mail volume is high.
The errors are all basicaly the same (examples below from forwards of failed
messages)
conversation with nxu02.ptr-online.COM[65.99.245.52] timed out while
receiving the initial server greeting
----- Transcript of session follows -----
451 4.4.1 reply: read error from nxu02.ptr-online.com.
<x...@domain>... Deferred: Connection timed out with
nxu02.ptr-online.com.
Message could not be delivered for 4 hours
Message will be deleted from queue
----- Transcript of session follows -----451 4.4.1 reply: read error from
nxu02.ptr-online.com....@domain... Deferred: Connection timed out with
nxu02.ptr-online.com.Message could not be delivered for 3 hoursMessage will
be deleted from queue
As I looked at some of the logs, I noticed the following happening alot:
from spamd logs:
@4000000049cb87e92a31cfac [2374] info: prefork: child states: BBBBB
@4000000049cb87e92a31d77c [2374] info: prefork: server
reached --max-children setting, consider raising it
I have no clue where to raise the child limits.
when I run top, the system has 1.2gig ram free all the time so I do not
think it is a memory issue.
Does anyone have any ideas? This is driving me nuts.
James Beam
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