Very Computer

Every once in a while I get an error from my Mailer-Daemon with the
below error. This line makes me nervous:

<<< 553 Netra host name configuration error

but everything else seems to work fine. Has anyone seen this sort of
thing before is it something to worry about? Is it complaining about
the message to my server or the fact it can't return the message to
the other system? When I send a message to my server from another

Help?
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Received: by Netra (5.x/SMI-SVR4)
        id AA09087; Mon, 27 Apr 1998 09:21:42 -0700
Date: Mon, 27 Apr 1998 09:21:42 -0700
From: Mailer-Daemon (Mail Delivery Subsystem)
Subject: Returned mail: Service unavailable
To: Postmaster

   ----- Transcript of session follows -----
Connected to netra.bcpsea.bc.ca:

Quote:>>> HELO Netra

<<< 553 Netra host name configuration error

  ----- Message header follows -----

Received: from mail.sd64.bc.ca (sd64.bc.ca) by Netra (5.x/SMI-SVR4)
        id AA09084; Mon, 27 Apr 1998 09:21:42 -0700


Date: Mon, 27 Apr 1998 09:23:40 -0700
Subject: Proposed BCTF Agreement

Precedence: first-class
Priority: normal

Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
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      Jason Gilley, Systems Coordinator, Webmaster
      B.C. Public School Employers' Association

      Tel: (604) 730-4516              Fax: (604) 730-0787