paul at nfg
Jul 26, 2013, 11:38 AM
Post #2 of 3
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On 07/26/2013 07:10 PM, Masood Rahim wrote:
> I've been running dbmail for several years, the 2.x version had a
> very stable imap process.
Not really. The pre-forking architecture just means you don't notice
when a imapd process crashes.
> The 3.x version, the imap service is
> completely unstable. I've used the latest 3.11 build as well as
> several builds between the 3.x release to no avail. I'm also running
> the imap service on multiple servers with and without load and they
> still crash. Sometimes multiple times per day. Now I have monit
> monitoring the imap process and restarting it if it fails and it
> restarts the imap process frequently. I've used different libzdb
> versions as well without any help on the matter. Sometimes the imap
> process is still running but you can't connect to it, if you telnet
> to it during this time it is listening to the imap port but doesn't
> return the imap banner indicating a successful connection. I'm using
> Ubuntu 12.04 LTS on all the boxes.
3.0.2 has been running on some quite large and heavy loaded systems.
Non-responsive systems can sometimes be solved by running:
export EVENT_NOEPOLL=yes dbmail-imapd
Crashes as such can have all kinds of root-causes. No point in me guessing.
--
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