[27618] in North American Network Operators' Group
Re: Retracing Sender's SMTP IP Address using MS Exchange 5.5
daemon@ATHENA.MIT.EDU (Henry R. Linneweh)
Tue Feb 29 12:41:22 2000
Message-ID: <38BC043D.1164BAC9@concentric.net>
Date: Tue, 29 Feb 2000 09:39:09 -0800
From: "Henry R. Linneweh" <linneweh@concentric.net>
Reply-To: linneweh@concentric.net
MIME-Version: 1.0
To: Toplez Razer <z28convertible@usa.net>
Cc: nanog@merit.edu, romulus@onebox.com
Content-Type: text/plain; charset=us-ascii
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Errors-To: owner-nanog-outgoing@merit.edu
Headers can be forged, if that is what you want to know. And tracing
can get messy sometimes in attempting to track down the originator.
Toplez Razer wrote:
> Dear Folks,
> We receive an e-mail that we want to reply back, but the sender's SMTP is NOT
> registered in DNS. Let's say the sender is who@xyz.com.
>
> Let's assume xyz.com is being resolve with its ISP DNS 150.150.150.1. But
> there is no MX for xyz.com in this DNS.
>
> Our e-mail is MS Exchange 5.5. Can we trace the sender's SMTP IP address?
> Is there better way than to peel off the original header packet to see the
> sender IP?
>
> Thanks,
> Audie Onibala
>
> ____________________________________________________________________
> Get free email and a permanent address at http://www.netaddress.com/?N=1
--
Thank you;
|--------------------------------------------|
| Thinking is a learned process so is UNIX |
|--------------------------------------------|
Henry R. Linneweh
