From: Gerardo Herzig (gherzigfmed.uba.ar)
Date: Thu Dec 11 2008 - 11:32:52 CST

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Hi all. Im facing a ugly situation. Some spammer is using the webmail to
 send spam. The thing is, hes using an actual account/password (from my
server)to authenticate agains the webmail, and then sending mail from
"UK LOTTO <infouklotto.com>"...crap!!

Since i have
smtpd_recipient_restrictions = permit_sasl_authenticated,
permit_mynetworks, reject_unauth_destination

This dude is authenticated, so...what can i do? Cant i restrict or check
the address which is sending and forbidde those which are not of my domain?

Thanks!
Gerardo

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