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Date: Fri, 4 Apr 1997 20:28:15 -0800 (PST)
From: Doug White <dwhite@gdi.uoregon.edu>
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Reply-To: Doug White <dwhite@resnet.uoregon.edu>
To: jadeite <jadeite@light.pomona.edu>
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Subject: Re: logging into mail port
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On Thu, 3 Apr 1997, jadeite wrote:

> How do I prevent people from telnetting to the mail port and sending out
> mail with a fake username and hostname?

How restrictive do you want to be?  Unfortunately it's very difficult to
separate junkmail from real mail, so you either have to do some IP
filtering or wholesale disable sendmail.  You might check the sendmail
documentation at http://www.sendmail.org/ for hints.

Doug White                              | University of Oregon  
Internet:  dwhite@resnet.uoregon.edu    | Residence Networking Assistant
http://gladstone.uoregon.edu/~dwhite    | Computer Science Major