On 04/06/2012 12:28 AM, Rafiqul Islam wrote:
My question is too many unknown user sending mail using my MTA(Postfix)
so that hotmail,google reject mail from my domain(mail.navigation.com
<http://mail.navigation.com> and IP:202.53.168.75)  and i don't know how
to stop this unexpected outgoing mail.

Close incoming Port 25 and tell sendmail to accept mail only from 127.0.0.0. HTH, HAND.
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