I've just put live a brand new shiney Centos 7 server to replace my aging Fedora system. One of the reasons for doing the upgrade was to try to get rid of the errors that prevented some sites from sending emails to us.
Unfortunately, I'm still experiencing the same errors on my new server. I'm getting log entries like: 2015-08-27 14:00:04 H=mx-relay33-dus.antispameurope.com [94.100.134.233] Warning: notquit: 94.100.134.233 failed with command-timeout 2015-08-27 14:00:09 TLS error on connection from mx-relay33-dus.antispameurope.com [94.100.134.233] (SSL_accept): timed out 2015-08-27 14:02:03 SMTP command timeout on connection from mx-relay42-dus.antispameurope.com [94.100.134.242] 2015-08-27 14:02:03 H=mx-relay42-dus.antispameurope.com [94.100.134.242] Warning: notquit: 94.100.134.242 failed with command-timeout 2015-08-27 14:05:03 SMTP command timeout on connection from mx-relay35-dus.antispameurope.com [94.100.134.235] 2015-08-27 14:05:03 H=mx-relay35-dus.antispameurope.com [94.100.134.235] Warning: notquit: 94.100.134.235 failed with command-timeout 2015-08-27 14:05:13 SMTP command timeout on connection from mx-relay31-dus.antispameurope.com [94.100.134.231] 2015-08-27 14:05:13 H=mx-relay31-dus.antispameurope.com [94.100.134.231] Warning: notquit: 94.100.134.231 failed with command-timeout 2015-08-27 14:06:03 TLS error on connection from mx-relay42-dus.antispameurope.com [94.100.134.242] (SSL_accept): timed out Can anyone suggest what could be causing this, or at least where I can start looking to investigate the problem? As the new server is significantly bigger / faster than the old one, I don't think performance is the cause. I have noticed that when I 'tail -f /var/log/exim/mainlog' it scrolls up my screen much quicker than the old server did so I think that performance may have been part of the reason originally -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
