Are there a lot of scans running at once?
# qmlog -g prefork spamd
will show you.
Are you using any RBLs at this point? I'd add spamhaus at least.
Ronnie Tartar wrote:
Mine are in the 16/100 range.
----- Original Message ----- From: "Jake Vickers" <[email protected]>
To: <[email protected]>
Sent: Monday, July 13, 2009 1:59 PM
Subject: Re: [qmailtoaster] SMTP timeouts
Eric Shubert wrote:
You too? What the heck's going on???
(BTW, nice to see you again on Saturday)
I don't see anything in particular, except that your system appears
to be busy scanning a lot at times.
Timeouts are intermittent I'm guessing, right?
I'm also guessing that timeouts occur when there are many scans
active at the same time. Can you confirm this?
Are you seeing a lot of paging when this happens?
I just helped Gilbert out over the phone and am logged into his system
now.
His particular scenario looked to be maxed out connections. He was not
running any blacklists and was consistently running 199/200 incoming
connections (check your /var/log/qmail/smtp current file to see how
many incoming connections you have). I enabled cbl.abuseat.org and
zen.spamhaus.org and his incoming connections dropped to 25/200 and
his server became responsive again.
You others having similar issues may want to investigate this. It
looks like there may be a spam storm this fine Monday and your
incoming connections may be maxed out.
--
-Eric 'shubes'
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