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From: bob@kahala.hig.hawaii.edu (Bob Cunningham)
Newsgroups: comp.mail.misc
Subject: Re: Jail postmasters
Message-ID: <5594@uhccux.uhcc.hawaii.edu>
Date: 1 Dec 89 18:03:42 GMT
References: <496@nisca.ircc.ohio-state.edu>
Sender: news@uhccux.uhcc.hawaii.edu
Reply-To: bob@kahala.hig.hawaii.edu (Bob Cunningham)
Distribution: usa
Organization: Hawaii Institute of Geophysics, University of Hawaii
Lines: 10

It's often more useful to query the next level up in the domain.  For example,
you might not get an answer from postmaster@arbitrarymachinename.hig.hawaii.edu,
but you will get a reply if you query postmaster@hig.hawaii.edu (me),
or postmaster@hawaii.edu.

Another thing worth trying, if you're on the Internet, is 
"finger @somewhere" which actually seems to work most of the time.
Bob Cunningham
Hawaii Institute of Geophysics, University of Hawaii
bob@kahala.hig.hawaii.edu