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anonynous qmail spam

Hello folks, I've a big problem with my server.
I've 50.000 queue emails in my qmail. My panel is plesk 9.
For some reason all the queue emails are from: anonynous@my-domain.
How I can setup my qmail to stop that email account, or how I can block it to stop somebody can use it outside my server??

Thanks for any help
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nkoriginal
Asked:
nkoriginal
2 Solutions
 
cjl7freelance for hireCommented:
You might be an open-relay (which is a very bad thing...).

I suggest that you

1. shut down your mailserver
2. fix the problem

Have a look at http://qmail.3va.net/qdp/qmail-antirelay.html and make sure you are not an open-relay...

Regards,

Jonas
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jar3817Commented:
LIke cjl7 said, check if you're an open relay. Does this server allow relaying for users who successfully authenticate? If so, look in the logs for the user account that is generating these emails and change the password.
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arnoldCommented:
Look at the messages that are from this sender and try to determine their source i.e. did they come in through the SMTP side, or were they created using a web site you have that etc.

Can you post the headers from one of these messages?

Depending on how/which qmail you have i.e. do you have qregex option/patch where you can define the badmailfrom/badrcptto http://www.arda.homeunix.net/store/qmail/??
you could use these to define a which recipients/senders your server will not accept.

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