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Port 25 Heavy Bandwidth

Discussion in 'Plesk for Linux - 8.x and Older' started by kram@, Mar 15, 2006.

  1. kram@

    kram@ Regular Pleskian

    Dec 11, 2003
    Likes Received:
    South Africa
    Hello All,

    Is there are easy way to dertermine what domain is utilizing a heavy chunk of bandwidth on port 25?

    I have a situation where at certain times of the day my server reports heavy utlization over 4Mbps, when i check with IPTRAF i can see it is all on port 25.

    I can get the ip generating the traffic, but the ip is a dynamic ip from a local DSL servcie provider.

    What i assume is happening is the client is pushing a number of "large" files from a 1Mbps DSL once it gets to my server it is pushed out a the max rate of my allocated bandwidth.

    Any help will be greatly appcriated!!!
  2. wagnerch

    wagnerch Guest

    You can look in your maillog (/usr/local/psa/var/log/maillog on Fedora):

    Mar 15 22:11:24 u15183227 qmail: 1142478684.489763 info msg 12601731: bytes 32315 from <yoyo@nowhere.com> qp 8294 uid 2020

    There is a field there, bytes 32315. Which means the message was 32K. grep "info msg" /usr/local/psa/var/log/maillog should help narrow it down.