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Mail server hacked

Hi,

I'm using Suse Open Exchange and in my mail queue I have email from accounts other than the ones setup on the server. I believe the server has been hacked and used by others to send email. Because of that i am being blacklisted.

Another thing is that i need to kill the spamd process as is using the processor at it's maximum and emails are blocked in the queue.

What steps should I take in stopping the attack?

Thanks.
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pbruna
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ASKER

In the mail queue I have emails coming from outside source where  the destination is an outside domain.

What should I do in this case?
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Michael Worsham
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ASKER

I checked and it's OK - The server is not an open relay.
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ASKER

In the mail queue i have this one address from outside source that sends emails to accounts for example. how can i block this address?
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