Configure SMTP settings

Having trouble getting the correct settings for smtp servers.

I have a web application the runs under two load balanced web servers.  Each server is running Windows 2003 Web Server and IIS 6.

I have set the FQDN in smtp server to "" (the domain)

Here is a return response I recieved that is typical.

Return-Path: <>
Received: (qmail 21806 invoked by uid 0); 18 Jun 2008 21:29:15 -0000
Received: from unknown (HELO (
  by 0 with SMTP; 18 Jun 2008 21:29:15 -0000
Received: from ucweb1 ([]) by with Microsoft SMTPSVC(6.0.3790.3959);
       Wed, 18 Jun 2008 17:29:09 -0400
MIME-Version: 1.0
Date: 18 Jun 2008 17:29:09 -0400
Content-Type: multipart/alternative;
Message-ID: <>
X-OriginalArrivalTime: 18 Jun 2008 21:29:09.0000 (UTC) FILETIME=[57DF4080:01C8D18A]

It would seem there are two issues in the respone.
1. from unknown (HELO
2.  from "ucweb1 ([])".....It really shouldn't show the computer name......should it?

I don't know what to do to correct this.

Thanks for your help.
Who is Participating?
bevhostConnect With a Mentor Commented:
1. it says unknown because can't lookup the reverse DNS.  I see that there is one and it matches your helo name.  Has it been there long?  Is it still doing this?

2. Yes it tries to make the email as traceable as possible. Your local SMTP service received it from first and then relayed it.
Syngin9Connect With a Mentor Commented:
Yes I agree that you'll need to have your provider set up reverse DNS for the server.  From what I've seen, listing the name and / or IP of the machine the server received the email from is normal.  I'm unsure how one would go about removing it.
dbashley1Author Commented:
The reverse dns has been set for a few years now.  Not sure why it wouldn't be able to find it.
It could have been a transient/temporary error.
Do you still receive the same results now?
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