[Mimedefang] $helo versus $ip

[Chris Myers]

----- Original Message ----- 
From: "Jack Olszewski" <jacek at hermes.net.au>
To: <mimedefang at lists.roaringpenguin.com>
Sent: Monday, February 02, 2004 7:41 PM
Subject: [Mimedefang] $helo versus $ip


> In the archives of this list I can't find anything on possible checks
> of $helo versus $ip in filter_relay. What about finding the address of
> the host given as $helo, and matching it against $ip? Would it be safe
> to reject the message if they do not match? For instance (not tested
> in mimedefang-filter yet):

See the thread beginning with
http://lists.roaringpenguin.com/pipermail/mimedefang/2004-January/019000.html.

You can get a lot of false positives with strong HELO checking.

Chris Myers
Networks By Design