I was observing my Efa-server about 30 minutes ago. I saw that the 'Milter Inbound' queue kept going up but nothing was being processed.
The 'per-minute traffic' graph totally flat lined.
I know that traffic was being sent to the Efa-server from another SMTP GW. So the traffic never stopped going to the Efa-server.
Yesterday I added an extra 10GB (40gb total) to the server and increased the child procs on Mailscanner. However, it still seems to "hang".
This is what it looked like:
Mail Queues
Milter Inbound:
251
Milter Outbound:
0
Postfix Inbound:
0
Postfix Outbound:
1314
A few logs:
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Feb 12 02:56:08 sc01 php[428463]: #3 /usr/bin/mailwatch/tools/Postfix_relay/mailwatch_postfix_relay.php(97): MtaLogProcessor->doit('cat /var/log/ma...')
Feb 12 02:56:08 sc01 php[428463]: #4 {main}
Feb 12 02:56:08 sc01 php[428463]: thrown in /var/www/html/mailscanner/functions.php on line 1047
Feb 12 02:56:08 sc01 php[428463]: cat: write error: Broken pipe
Feb 12 02:56:08 sc01 systemd[1]: postfix_relay.service: Main process exited, code=exited, status=255/n/a
Feb 12 02:56:08 sc01 systemd[1]: postfix_relay.service: Failed with result 'exit-code'.
Feb 12 02:56:08 sc01 systemd[1]: postfix_relay.service: Service RestartSec=100ms expired, scheduling restart.
Feb 12 02:56:08 sc01 systemd[1]: postfix_relay.service: Scheduled restart job, restart counter is at 161.
Feb 12 02:56:08 sc01 systemd[1]: Stopped Postfix relay service for MailWatch.
Feb 12 02:56:08 sc01 systemd[1]: Started Postfix relay service for MailWatch.
Mysql stats at the time:
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+--------+-------------+-----------+-------------+---------+------+--------------------------+------------------------------------------------------------------------------------------------------+----------+
| Id | User | Host | db | Command | Time | State | Info | Progress |
+--------+-------------+-----------+-------------+---------+------+--------------------------+------------------------------------------------------------------------------------------------------+----------+
| 1 | system user | | | Daemon | | InnoDB purge coordinator | | 0.000 |
| 2 | system user | | | Daemon | | InnoDB purge worker | | 0.000 |
| 3 | system user | | | Daemon | | InnoDB purge worker | | 0.000 |
| 4 | system user | | | Daemon | | InnoDB purge worker | | 0.000 |
| 5 | system user | | | Daemon | | InnoDB shutdown handler | | 0.000 |
| 17 | mailwatch | localhost | mailscanner | Sleep | 1 | | | 0.000 |
| 109524 | mailwatch | localhost | mailscanner | Query | 0 | Commit | REPLACE INTO mtalog (`timestamp`,`host`,`type`,`msg_id`,`relay`,`dsn`,`status`,`delay`) VALUES (FROM | 0.000 |
| 109845 | root | localhost | | Query | 0 | Init | show processlist | 0.000 |
+--------+-------------+-----------+-------------+---------+------+--------------------------+------------------------------------------------------------------------------------------------------+----------+
Maillog:
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Feb 12 03:04:28 sc01 postfix/smtp[2243]: connect to nds.g.fedex.com[204.135.226.228]:25: Connection timed out
Feb 12 03:04:28 sc01 postfix/smtp[2255]: connect to nds.g.fedex.com[204.135.226.228]:25: Connection timed out
Feb 12 03:04:28 sc01 postfix/smtp[2252]: connect to nds.g.fedex.com[204.135.227.123]:25: Connection timed out
Feb 12 03:04:28 sc01 postfix/smtp[2251]: connect to nds.g.fedex.com[204.135.226.227]:25: Connection timed out
Feb 12 03:04:28 sc01 postfix/smtp[2227]: connect to mx04.movistar.com.ar[200.49.206.138]:25: Connection timed out
Feb 12 03:04:28 sc01 postfix/smtp[2230]: connect to mx03.movistar.com.ar[200.49.206.137]:25: Connection timed out
Feb 12 03:04:30 sc01 postfix/smtp[2234]: connect to nds.g.fedex.com[204.135.227.124]:25: Connection timed out
Feb 12 03:04:30 sc01 postfix/smtp[2239]: connect to mx3.mms.optus.com.au[61.88.190.23]:25: Connection timed out
Feb 12 03:04:30 sc01 postfix/smtp[2245]: connect to mx3.mms.optus.com.au[61.88.190.23]:25: Connection timed out
Feb 12 03:04:30 sc01 postfix/smtp[2236]: connect to gmaiil.com[208.73.210.217]:25: Connection timed out
Feb 12 03:04:30 sc01 postfix/smtp[2248]: connect to nds.g.fedex.com[204.135.227.123]:25: Connection timed out
I rebooted the system, waiting about 10 minutes and the email finally left the 'Milter Inbound' queue.
Any ideas on where I can look next, or what might be causing this?