Hi Andrew,
Thanks for the quick answer. I greatly appreciate it.
I have already done all these checks and there are actually more than 2000 valid users trying to connect from different IP addresses.
Fabio
On 31 July 2014 19:49, Andrew Morgan <morgan@xxxxxxxx> wrote:
On Thu, 31 Jul 2014, Fabio S. Schmidt wrote:Are there really 2000+ IMAP clients trying to connect? Try "ps -ef | grep imapd | wc -l".
Hi !
I'm trying to fix an environment which has been growing without proper
attention.
There are about 7000 inboxes but only 5000 are active and the maxchilds
parameter is set as "2000" causing a lot of timeouts when the clients try
to connect. I thought as a first approach trying to increase this parameter.
I have noticed that even with the "maxchilds" parameter set as "2000" there
are about 2020 processes open, is this behaviour normal? The version in
use is 2.4.12.
It's also possible that there is an IMAP client running wild, making hundreds of connections. The output of "netstat -nt" might show you if there are a lot of connections from a single IP address.
If you really need to allow more connections, increase the maxchilds parameter. Beware that you don't overload the server, either with too much I/O or not enough RAM available! :)
Andy
My best regards, Fabio Soares Schmidt Linux Professional Institute - LPIC-3 Microsoft Certified Technology Specialist: Active Directory
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