janitor@scgis.com wrote:
> Hi,
>
> I'm running Sendmail 8.13.1 on FreeBSD 4.11. I've had problems
> forwarding
> one email address to a yahoo account. Whether I add the address in a
> .forward file or by /etc/mail/aliases I get the same erorr.
>
> ----- Transcript of session follows -----
> 550 5.1.2 useradr@yahoo.com... Host unknown (Name server: yahoo.com: no
>
> data known)
>
> The local account moveme_joesmith recieves any sent mail. When I
> add an alias for him at yahoo.com by /etc/mail/aliases or by a .forward
>
> file I get a bounce with this error message..
>
> Full bounce is below. TIA for any ideas.
>
> Subject: Returned mail: see transcript for details
> Auto-Submitted: auto-generated (failure)
> Status: OR
>
> This is a MIME-encapsulated message
>
> --k8OI3xTu021065.1159121039/www.mylocaldomain.com
>
> The original message was received at Sun, 24 Sep 2006 14:03:58 -0400
> (EDT)
> from localhost [127.0.0.1]
>
> ----- The following addresses had permanent fatal errors -----
> useradr@yahoo.com
> (expanded from: <moveme_joesmith@mylocaldomain.com>)
>
> ----- Transcript of session follows -----
> 550 5.1.2 useradr@yahoo.com... Host unknown (Name server: yahoo.com: no
> data known)
>
> --k8OI3xTu021065.1159121039/www.mylocaldomain.com
> Content-Type: message/delivery-status
>
> Reporting-MTA: dns; www.mylocaldomain.com
> Received-From-MTA: DNS; localhost
> Arrival-Date: Sun, 24 Sep 2006 14:03:58 -0400 (EDT)
>
> Final-Recipient: RFC822; moveme_joesmith@mylocaldomain.com
> X-Actual-Recipient: RFC822; useradr@yahoo.com
> Action: failed
> Status: 5.1.2
> Remote-MTA: DNS; yahoo.com
> Last-Attempt-Date: Sun, 24 Sep 2006 14:03:59 -0400 (EDT)
>
> --k8OI3xTu021065.1159121039/www.mylocaldomain.com
> Content-Type: message/rfc822
>
> Return-Path: <sender@mylocaldomain.com>
> Received: from www.mylocaldomain.com (localhost [127.0.0.1])
> by www.mylocaldomain.com (8.13.1/8.13.1) with ESMTP id k8OI3wTu021064
> for <moveme_joesmith@mylocaldomain.com>; Sun, 24 Sep 2006 14:03:58
> -0400 (EDT)
> (envelope-from sender@mylocaldomain.com)
> Received: (from sj@localhost)
> by www.mylocaldomain.com (8.13.1/8.13.1/Submit) id k8OI3wVr021063
> for moveme_joesmith@mylocaldomain.com; Sun, 24 Sep 2006 14:03:58 -0400
> (EDT)
> (envelope-from sj)
> From: Sys Janitor <sender@mylocaldomain.com>
> Message-Id: <200609241803.k8OI3wVr021063@www.mylocaldomain.com >
> Subject: test 4
> To: moveme_joesmith@mylocaldomain.com
> Date: Sun, 24 Sep 2006 14:03:58 -0400 (EDT)
> X-Mailer: ELM [version 2.4ME+ PL119 (25)]
> MIME-Version: 1.0
> Content-Transfer-Encoding: 7bit
> Content-Type: text/plain; charset=US-ASCII
>
>
> test 4
>
>
> --k8OI3xTu021065.1159121039/www.mylocaldomain.com--
>



Check to see if DNS works.

Run:

dig mx yahoo.com

good luck.