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Too many connections error

Discussion in 'E-mail Discussions' started by sahostking, Jun 30, 2016.

  1. sahostking

    sahostking Well-Known Member

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    Code:
    2016-06-30 09:38:49 no host name found for IP address 27.74.141.165
    2016-06-30 09:38:49 Connection from [122.165.128.156]:21672 refused: too many connections
    2016-06-30 09:38:49 H=(static.example.vn) [14.163.208.66]:33792 F=<ahoi@tourismus.example.de> rejected RCPT <hoctr936@domain.co.za>: "
    2016-06-30 09:38:49 H=(localhost) [113.175.61.10]:17511 F=<s.bonhoure@example.fr> rejected RCPT <cd67c364@domain.co.za>: "
    2016-06-30 09:38:49 H=(adsl.example.vn) [115.79.41.62]:61676 F=<abdul.latif@pk.example.com> rejected RCPT <ijluxmvbv@domain.co.za>: "
    2016-06-30 09:38:49 H=([59.90.192.81]) [59.90.192.81]:23828 Warning: Sender rate 2.5 / 1h
    2016-06-30 09:38:49 Connection from [5.116.255.205]:1091 refused: too many connections
    2016-06-30 09:38:49 unexpected disconnection while reading SMTP command from ([182.74.144.10]) [182.74.144.10]:49531 (error: Connection reset by peer)
    2016-06-30 09:38:50 SMTP connection from [183.91.4.187]:36289 (TCP/IP connection count = 250)
    2016-06-30 09:38:50 Connection from [116.118.113.117]:15734 refused: too many connections
    2016-06-30 09:38:50 H=eu-outgoing-2-8.example.co.za [188.138.68.17]:48285 Warning: Sender rate 1.5 / 1h
    2016-06-30 09:38:50 SMTP connection from [1.55.198.183]:32831 lost
    2016-06-30 09:38:50 unexpected disconnection while reading SMTP command from (static.example.vn) [14.163.208.66]:33792 (error: Connection reset by peer)
    2016-06-30 09:38:50 SMTP connection from [113.175.138.19]:11667 (TCP/IP connection count = 249)
    2016-06-30 09:38:50 H=([182.180.161.225]) [182.180.161.225]:13125 Warning: Sender rate 2.0 / 1h
    2016-06-30 09:38:50 SMTP connection from [182.74.144.10]:49935 (TCP/IP connection count = 250)
    2016-06-30 09:38:50 no host name found for IP address 182.74.144.10
    2016-06-30 09:38:50 unexpected disconnection while reading SMTP command from (localhost) [113.175.61.10]:17511 (error: Connection reset by peer)
    2016-06-30 09:38:50 SMTP connection from [27.75.177.107]:18846 (TCP/IP connection count = 250)
    2016-06-30 09:38:50 no host name found for IP address 27.75.177.107
    
    I assume there is no real way to stop this? We use maislcanner.

    We used to use grscripts ASSP before. Don't think that happened there. May try it out again and see.

    NEvertheless anyone know exim setting besides increases exim accptsmpt max setting which I increased already from 100 to 250 with not much lcuk?
     
    #1 sahostking, Jun 30, 2016
    Last edited by a moderator: Jun 30, 2016
  2. webhostuk

    webhostuk Well-Known Member

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    Are you willing to stop the connections or increase connection limit? CSF or apf firewall can help in blocking connection from certain IPs. and exim config file only can help you increase the connection limit.
     
  3. sahostking

    sahostking Well-Known Member

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    I'll try anything but with caution. :)
     
  4. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    It's likely a better idea to block the offending IP addresses if you notice a large number of them are coming from the same IP address. Otherwise, consider gradually increasing the limit to measure how your CPU usage is affected.

    Thank you.
     
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