----- Original Message ----- 
From: "Lucas Albers" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, January 13, 2004 1:46 AM
Subject: [Mimedefang] rejecting on helo,drive-by-relay,forged_sender,


> I've been playing around with rejecting on helo/name/ip matching.
>
> If domain of helo and $hostname don't match and machine is a just an ip
> address, reject the email.
> [...]
> caveats:
> A number of sites give just localhost names, even big name sites.

Other caveats:

Some ISP's don't bother to set up reverse DNS for their customers so
$RelayHost will never match $helo...  Sad but true.

Chris


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