Mailing List Message #92447
From: Bret Miller <>
Subject: RE: A script or a rule to block forged addresses ?
Date: Tue, 04 Sep 2007 09:05:12 -0700
To: CommuniGate Pro Discussions <>
X-Mailer: CommuniGate Pro MAPI Connector 1.2.12/1.2.12(local)
> 2 simple questions:
> Is there a script to stop forged addresses ?


> I wish to know if the following rule is enough stop forged addresses
> [source] [not in] trusted, authenticated
> [From] [in] * , *Mailer-Daemon*
> [return-Path] [not in] * , *Mailer-Daemon*
> [reject] or [Discard]
> Running CGPRO 4.2.10 under Mac OS X

How about setting the domain to "force auth" for "non-clients"? The force auth setting requires authentication for from addresses in your domain(s). If you set it to non-clients, it requires authentication from anyone outside your network in order to send email from accounts in your domain(s).


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