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Exim SMTP not working anymore; connection refused

Discussion in 'E-mail Discussions' started by mitch2k, Mar 7, 2013.

  1. mitch2k

    mitch2k Member

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    Hi,

    at 2am today I started to receive errors from my Nagios machine telling that SMTP was critical on 1 of my VPS servers. Connection is refused
    I checked the logs, and it looks like some connections are 'lost' like this:
    Code:
    2013-03-07 20:56:20 SMTP connection from hermes.xxx.be [81.95.xxx.xxx]:39109 lost
    Things i've checked:
    - Disabled firewall on VPS
    - Tested SMTP using external tools
    Code:
    2013-03-07 21:21:47 SMTP connection from mxtb-pws3.mxtoolbox.com [64.20.227.133]:59913 lost (error: Connection reset by peer)
    - Added Nagios an mxtoolbox to SMTP whitelist
    - Restarted Exim
    - Restarted complete server
    - Updated OS and software
    - Tried to send an e-mail using telnet on my PC. It was accepted and delivered.
    - Disabled RBL checks
    - Tested connection speed

    Anyone has ideas to troubleshoot this problem?

    Thanks!
     
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