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Thread: qmail - mail server hacked,sending spam - help.. >

  1. #1
    Join Date
    Jul 2008
    Location
    Sofia, Bulgaria
    Posts
    7

    Question qmail - mail server hacked,sending spam - help.. >

    Hello, I have problem with one of my mail servers...,
    I am using qmail , from 2 days I notice that there is huge load average on the server - 9 and up ..., I stopped its wlan access , when I look at the top table the mail services make big load average, and when I stop qmail the average stops. (qmailctl stop) ..
    So I checked the queues of qmail, and saw that My server actually is sending hundreds of mails :/ (last time where 1000+), I deleted them and it starts to send again more and more...,
    My problem is that I can't locate the source of the hack, where should I look to stop the process which makes my server sending SPAM..
    Thanks.

  2. #2
    Join Date
    Jun 2008
    Location
    Finland, European Union
    Posts
    1,879

    Default Re: qmail - mail server hacked,sending spam - help.. >

    Guess number one - you've misconfigured your system to be an open relay - this means anyone can connect and relay mail via your system.

    Go here;
    Check an Open Relay

    Input the name or IP of your server - if you have open relays, close it ASAP.

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