From: "gustav gundacker" <gg0815@gmx.net>
To: aellis@saberlogic.com
Cc: netfilter@lists.netfilter.org
Subject: Re: SMTP Routing Based On Recipient
Date: Tue, 23 Dec 2003 22:57:18 +0100 (MET) [thread overview]
Message-ID: <30807.1072216638@www24.gmx.net> (raw)
In-Reply-To: 1072121282.10935.12.camel@localhost.localdomain
a solution is smtpd/smtpfwdd from juniper see
http://www.obtuse.com/smtpd.html
gunnar
> I am running a MS Exchange 5.5 server and am getting hit with the NDR
> (non-delivery report) Reverse Spam Attack as described here:
>
> http://www.tek-tips.com/gviewthread.cfm/lev2/3/lev3/15/pid/10/qid/725829
>
> As the thread describes, there is no way to just turn off NDRs in
> Exchange 5.5 - Microsoft is recommending third party utilities. What I
> am wondering is this - would it be possible to redirect SMTP to my Linux
> server, use iptables to check that the recipient matches a valid user
> >from a list I'd supply, and, if so, route the message to the Exchange
> server? And, if no valid recipient is found, the message is simply
> dropped. Is this even a logical way to handle this situation? Should I
> be looking at something like snort instead? I'm all ears!
>
> Thanks,
> --
> Adam Ellis <aellis@saberlogic.com>
> SaberLogic
>
--
+++ GMX - die erste Adresse für Mail, Message, More +++
Neu: Preissenkung für MMS und FreeMMS! http://www.gmx.net
prev parent reply other threads:[~2003-12-23 21:57 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-22 19:28 SMTP Routing Based On Recipient Adam Ellis
2003-12-22 19:39 ` Antony Stone
2003-12-23 11:37 ` Chris Brenton
2003-12-23 13:00 ` Adam Ellis
2003-12-23 13:14 ` Antony Stone
2003-12-23 15:36 ` Michael Gale
2003-12-23 15:52 ` Antony Stone
2003-12-23 19:20 ` Mark E. Donaldson
2003-12-23 21:57 ` gustav gundacker [this message]
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