Re: rfe: automagic open relay message refusal?

[aal@cpr.spb.ru (Alexey Lobanov)]

Hello.

Date sent:      	Tue, 12 Jun 2001 19:52:49 -0400 (EDT)
From:           	"Benjamin C.R. LaHaise" <blah@kvack.org>
To:             	zmailer@nic.funet.fi
Subject:        	rfe: automagic open relay message refusal?

> Hello,
> 
> 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 
this way.

2. Do not forget to whitelist your secondary MX-ers which  are 
also (normally) opened as outbound relays just for you :-)

Alexey


> 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?  =)
> 
>   -ben
> 
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====
Alexey Lobanov
al258-ripe
CPR, St.Petersburg
Head, IT Department
Phone +7-812-3468247
Fax +7-501-3468248, +7-812-3271408
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