MX Error

[Barry Margolin]

In article <92dik0$anh at pub3.rc.vix.com>, Brad <melchib at exch.prasol.com> wrote:
>I'm not sure how to explain this problem, but here goes....Our company
>decided to switch domain names from prasol.com to navitaire.com, but for
>a period of about 3 months we are going to use both.  I created the
>navitaire.com zone in our DNS db's and everything appears to be working
>except mail.  When I send an email from the outside world to myself, I
>get a bounced mail that looks like this:
>
>#########################################################
>The original message was received at Wed, 27 Dec 2000 11:10:48 -0600
>from uucp at localhost
>
>   ----- The following addresses had delivery problems -----
><brad at navitaire.com>  (unrecoverable error)
>
>   ----- Transcript of session follows -----
>554 MX list for navitaire.com points back to gw.prasol.com
>550 <brad at navitaire.com>... Host unknown (Name server: navitaire.com: no
>data known)

Do you have split DNS, i.e. different data on your internal DNS servers
than your public DNS servers?  Your public MX record looks fine, but the
above error indicates that there's an MX record that looks like:

navitaire.com.  IN MX  10 gw.prasol.com.

I wasn't able to reproduce the above problem.  When I tried to send mail to
brad at navitaire.com, I got the following bounce, which indicates that it got
to your Exchange server, but it doesn't recognize the account name.

Delivery-Date: Wed, 27 Dec 2000 20:26:47 +0000
Received: from columbia1-smrt1.gtei.net (columbia1-smrt1.gtei.net [4.2.3.36])
	by burlma1-smfil1.gtei.net (8.9.3/8.9.0) with ESMTP id UAA24953
	for <barmar at burlma1-smfil1.gtei.net>; Wed, 27 Dec 2000 20:26:47 GMT
Received: from gw.prasol.com (gw.prasol.com [63.224.27.10])
	by columbia1-smrt1.gtei.net (8.9.3/8.9.3) with SMTP id UAA12539
	for <barmar at genuity.net>; Wed, 27 Dec 2000 20:26:46 GMT
Received: by gw.prasol.com; id OAA08498; Wed, 27 Dec 2000 14:26:42 -0600
Received: from exchange.prasol.com(149.122.4.14) by gw.prasol.com via smap (V5.0)
	id xma008495; Wed, 27 Dec 00 14:25:51 -0600
Received: by exchange with Internet Mail Service (5.5.2653.19)
	id <ZVQ4XF44>; Wed, 27 Dec 2000 14:26:51 -0600
Message-ID: <EE817F9EEC24D411A3B900508B8B8B770154669B at exchange>
From: System Administrator <postmaster at exch.prasol.com>
To: barmar at genuity.net
Subject: Undeliverable: 
Date: Wed, 27 Dec 2000 14:26:50 -0600
MIME-Version: 1.0
X-Mailer: Internet Mail Service (5.5.2653.19)
Content-Type: multipart/mixed;
	boundary="----_=_NextPart_000_01C07043.57FED694"

Your message

  Sent:    Wed, 27 Dec 2000 14:25:41 -0600

did not reach the following recipient(s):

brad at navitaire.com on Wed, 27 Dec 2000 14:26:43 -0600
    The recipient name is not recognized
	The MTS-ID of the original message is: c=us;a= ;p=pra solutions,
l;l=EXCHANGE0012272026ZVQ4XF4R
    MSEXCH:IMS:PRA Solutions, LLC:Exchange1:EXCHANGE 0 (000C05A6) Unknown
Recipient

-- 
Barry Margolin, barmar at genuity.net
Genuity, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.