postfix relay problem

Discussion in 'Server Operation' started by KenKnight, Jul 17, 2007.

  1. KenKnight

    KenKnight Member

    Hi all,

    Not sure exactly what is going on, however, here are the details.

    1) got a call from a client who is running "The Perfect Debian setup" with ISPconfig. Port 25 has been blocked by their provider due to spamming. I checked the mail.log and syslog and sure enough I'm seeing all kinds of messages.

    2) I blocked some foreign IP's which appeared to be connecting to port 25 (ie Romania).

    3) My first thoughts are that there is a machine on the network that is causing the problem, but I did not have time to go and test everything so I will try to get there tomorrow.

    4) I installed some restrictive measures that Falko discusses in this thread. Hopefully this will have a positive impact. I'm currently monitoring.

    Any thoughts or suggestions would be greatly appreciated. I will post further tomorrow as I get on site and evaluate the network.

  2. falko

    falko Super Moderator ISPConfig Developer

    You can set up Postfix to relay through another mail server: :)

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