Re: [qmailtoaster] Re: squirrelmail/imap issue

Mon, 01 Mar 2010 12:37:36 -0800

So I bumped up the MAXDAEMONS=50 and restarted qmail.  About four hours later, I have 43 imapd processes running and getting new mail results in a timeout on thunderbird. I killall imapd processes, and can get emails immediately. I noticed there is also a MAXPERIP=4 and I bumped it up to MAXPERIP=6 and restarted qmail. See if that works.
Dave

Dave Hallowell wrote:
Jake,
Ah ha.  I see MAXDAEMONS=40. How'd I miss that? Okay, I'll bump it up and see what happens. Any suggestions on the number or just trial and error?
Thanks Jake.
Dave

Jake Vickers wrote:
On 03/01/2010 10:23 AM, Dave Hallowell wrote:
Helmut,
I recently ran into this problem with imap timing out.  I don't use squirrelmail much, but I was getting timeouts using thunderbird when trying to send and receive from imap email accounts.  I read a post on this list about timeouts when the number of imap processes reached a certain number.  In my case, when I had the smtp timeouts, I would run from the command line
# ps -ef | grep imapd | wc -l
and it would always return 43 processes when I was having problems. 42 processes, everything ran fine. When I had 43 imapd processes running and experiencing issues, I would run this from the command line.
# /usr/bin/killall -9 imapd
this would kill all the current imapd processes and sending and receiving email resumed properly.
I am running Centos4.8 and I haven't done an update for several months. Still running qmail-toaster-1.03-1.3.18.
I also analyzed, checked, and repaired my vpopmail database but this did not solve this issue.
So until I can figure out what is really causing this, I wrote a little script that runs from cron every 5 minutes and if there are more than 42 imapd processes running, it kills them. Here is the script if you wish to use it.
------ snip -----------
DT=`date`
KILLIT="/usr/bin/killall -9 imapd"
PID=`ps -ef | grep imapd | wc -l`
if [ $PID -gt 42 ]
then
#echo "too high"
echo $DT >> /oper/kill.log
echo $PID >> /oper/kill.log
$KILLIT > /dev/null 2>&1
fi
----- snip ---------


Have you looked at the imapd config and ensured the MAXDAEMONS is set high enough?

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--------------------------------------------------------------------------------- Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! --------------------------------------------------------------------------------- Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]

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