dbmail hanging

Hi,

I have detected a failure in the dbmail process. Sometimes it hangs and can't recover to normal operations. A restart is needed.

The server logs shows that rsyslog is rate limiting dbmail message logs generation when it hangs.

The /var/log/message displays the following:

Oct 29 10:49:26 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Oct 29 10:49:32 dbmail01 rsyslogd-2177: imuxsock lost 92936 messages from pid 27550 due to rate-limiting

Oct 29 10:49:32 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Oct 29 10:49:38 dbmail01 rsyslogd-2177: imuxsock lost 114578 messages from pid 27550 due to rate-limiting

Oct 29 10:49:38 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Oct 29 10:49:44 dbmail01 rsyslogd-2177: imuxsock lost 119995 messages from pid 27550 due to rate-limiting

Oct 29 10:49:44 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Oct 29 10:49:50 dbmail01 rsyslogd-2177: imuxsock lost 133795 messages from pid 27550 due to rate-limiting

Oct 29 10:49:50 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Oct 29 10:49:56 dbmail01 rsyslogd-2177: imuxsock lost 101392 messages from pid 27550 due to rate-limiting

Oct 29 10:49:56 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Oct 29 10:50:02 dbmail01 rsyslogd-2177: imuxsock lost 131723 messages from pid 27550 due to rate-limiting

Oct 29 10:50:02 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Oct 29 10:50:08 dbmail01 rsyslogd-2177: imuxsock lost 128597 messages from pid 27550 due to rate-limiting

Oct 29 10:50:08 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Oct 29 10:50:15 dbmail01 rsyslogd-2177: imuxsock lost 90241 messages from pid 27550 due to rate-limiting

Oct 29 10:50:16 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Oct 29 10:50:22 dbmail01 rsyslogd-2177: imuxsock lost 86302 messages from pid 27550 due to rate-limiting

Oct 29 10:50:22 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Oct 29 10:50:28 dbmail01 rsyslogd-2177: imuxsock lost 97177 messages from pid 27550 due to rate-limiting

Oct 29 10:50:28 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Oct 29 10:50:34 dbmail01 rsyslogd-2177: imuxsock lost 67308 messages from pid 27550 due to rate-limiting

Oct 29 10:50:34 dbmail01 rsyslogd-2177: imuxsock begins to drop messages from pid 27550 due to rate-limiting

Dbmail.conf:

file_logging_levels = 7

syslog_logging_levels = 15

Is it possible that Dbmail hangs because of rsyslog throttling? How to prevent it?

I am running Dbmail 3.1.17, Debian 7, 200 email accounts, 100 GB PostgreSQL database in size.

Sincerely.

Rogerio

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