Returned mail: Local configuration error

[Mail Delivery Subsystem <MAILER-DAEMON>]

The original message was received at Thu, 11 May 2000 17:03:07 -0400 (EDT)
from titan.metalab.unc.edu [152.2.210.14]

   ----- The following addresses had permanent fatal errors -----
<ldp-dis@mail.metalab.unc.edu>

   ----- Transcript of session follows -----
553 luna.metalab.unc.edu. config error: mail loops back to me (MX problem?)
554 <ldp-dis@mail.metalab.unc.edu>... Local configuration error
Reporting-MTA: dns; luna.oit.unc.edu
Received-From-MTA: DNS; titan.metalab.unc.edu
Arrival-Date: Thu, 11 May 2000 17:03:07 -0400 (EDT)

Final-Recipient: RFC822; ldp-dis@luna.metalab.unc.edu
Action: failed
Status: 5.5.0
Remote-MTA: DNS; luna.metalab.unc.edu
Last-Attempt-Date: Thu, 11 May 2000 17:03:07 -0400 (EDT)

--- Begin Message ---

• To: ldp-dis@metalab.unc.edu
• Subject: Output from "cron" command
• From: ldp-dis@metalab.unc.edu
• Date: Thu, 11 May 2000 17:02:49 -0400 (EDT)

Your "cron" job on titan.oit.unc.edu
/export/sunsite/users/ldp-dis/bin/addem 2>&1 >> /export/sunsite/users/ldp-dis/addem.out

produced the following output:

Warning: Database (2.4.3) != program (2.4.4) version.

--- End Message ---