Strange Sendmail message returning from my rs/6000

[Systems Staff]

Greetings,
    I'm in the process of bringing up my RS/6000, and am working on 
getting mail working.  Mail from the 6000 to my other machines works
fine, but mail to the 6000 is bounced back.  Here is the message
I get back.
*****************************

>From MAILER-DAEMON at itsa.ucsf.EDU Tue Feb 12 12:51:55 1991
Received: from itsa (itsa.ucsf.edu) by cca.ucsf.EDU (5.61/GSC4.19)
	id AA19780; Tue, 12 Feb 91 12:51:51 -0800
Received: from cca.ucsf.EDU by itsa (AIX 1.3/4.03)
          id AA03645; Thu, 7 Feb 91 04:19:05 -0800
Date: Thu, 7 Feb 91 04:19:05 -0800
From: MAILER-DAEMON at itsa.ucsf.EDU (Mail Delivery Subsystem)
Subject: Returned mail: Service unavailable
Message-Id: <9102121450.AA03645 at itsa>
To: <jd9014 at cca.ucsf.EDU>
Status: RO

   ----- Transcript of session follows -----
>>> HELO itsa
<<< 553 Local configuration error, hostname not recognized as local
554 <joed at itsa.ucsf.EDU>... Service unavailable: Bad file number
******************************

I've checked my /etc/hosts file, and that seems ok.  I've set up
my sendmail.cf with the Cw line showing my hostname and also including
lo and localhost.  Any idea what's going on?

I'm also curious if there is anyplace that all the error messages
that sendmail generates, are in a specific place, with hints as to
the possible problem and fix.  Thanks for any helpful hints.


is there