how to block spammer using my mailserver

Posted by fike on Server Fault See other posts from Server Fault or by fike
Published on 2012-06-28T07:56:51Z Indexed on 2012/06/28 9:17 UTC
Read the original article Hit count: 169

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emailserver

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sendmail

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spam

how to defend my mailserver using by spammer to send email to etc yahoomail , gmail , etc

my mail server now blocked by gmail. already setting to block of all that but still attacked by spammers

below log mail:-

Jun 24 03:29:26 abcd sendmail[13373]: q5NHV7Jm001938: to=, ctladdr= (525/528), delay=02:58:10, xdelay=00:00:02, mailer=esmtp, pri=3212216, relay=mta7.am0.yahoodns.net. [67.195.168.230], dsn=431, stat=Deferred: 452 Too many recipients

I really appreciate for the advice and assistance .

© Server Fault or respective owner

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