>>Do you have anything that checks if your services are alive? If so: >> is it just a "connection open" test or a "proper" imap test ?
Yes, I have. HostMonitor is installed in my Android Phone and queries the imap, pop ports every 2 minutes to see if it’s alive. It’s a not “proper” imap test. It’s just a “connection open” test as you mentioned. I am monitoring the production server because of the DBmail stability issues. Service uptime is a huge deal for me right now. I am monitoring the “opened files” by dbmail imapd process and I can see it grows steadily every minute (ls -l /proc/<pid>/fd | wc –l). I changed the “open files” limit to 4096 in the server. It may fix the imapd issue, but it does not fix the pop3d issues. Pop3d hangs every day with “general protection” errors. dbmail01 kernel: [21981989.961192] dbmail-pop3d[9821] general protection ip:7f92daba880a sp:7fff2cb2ae38 error:0 in libdbmail.so.0.0.0[7f92dab64000+6b000] Is Pop3d failure related to this monitoring as well? What changes in dbmail.conf could fix this “connection leak” created by monitoring? I am running dbmail 3.1.17, Pgsql 9.3. Thanks. Rogerio
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