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Home Forum Mail Server Fight against SPAM generated from my server

Fight against SPAM generated from my server
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4:46 pm
June 15, 2010


atanu

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Our Postfix server on RHEL 5 has been protected from SPAM and Virus, coming from outside domain, using spamassassin and clamav. 

But what to do if I want to block spam mails which are getting generated and forwarded from my server?  Relay has not been enabled and smtp auth is in place.  still I could see thousands of mail is getting forwarded from my system using something@yahoo.com mail id. 

 

Please help.

 

Atanu

 

 

 

 

8:38 pm
June 15, 2010


consultant

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Hi Atanu,

  1. Make sure your mail server is not an open relay
  2. Prevent your internal senders from spoofing their email address

 
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