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Re: rfe: automagic open relay message refusal?
Date sent: Tue, 12 Jun 2001 19:52:49 -0400 (EDT)
From: "Benjamin C.R. LaHaise" <email@example.com>
Subject: rfe: automagic open relay message refusal?
> This is a request for enhancement: I'd like an option in zmailer
> to configure the smtp server to check if the hosts that connect
> are open mail relays, and if so reject any incoming messages.
1. Seems, it is not an Unix Way. SMTP server should not generate
outbound SMTP connections :-). But nothing prevents you from
supporting your own automatic RSS-like DNS zone and fill it in
2. Do not forget to whitelist your secondary MX-ers which are
also (normally) opened as outbound relays just for you :-)
> The result is something similar to what MAPS and ORBS were
> attempting to perform, except that it's fully automated and not
> subject to the political whims of third parties. Is anyone
> interested in implementing this? =)
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