Great Circle Associates Firewalls
(October 1996)
 

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Subject: Re: smtp and auth
From: woody @ softiron . com
Date: Fri, 4 Oct 1996 21:07:49 -0700
To: raf @ ezunx . com
Cc: firewalls @ greatcircle . com
In-reply-to: <Chameleon . 844436777 . d3810 @ ws-jax-d3810> (message from rich on Fri, 4 Oct 96 09:43:48)

   Date: Fri,  4 Oct 96 09:43:48    

   What would cause SOME mail servers to send back a AUTH/113 connection before
   allowing mail to be sent?  Also, it seems to be random.  In otherwords, some
   servers do it sometimes but other times they do not.

I had xinetd query remote authorization for acceptance of mail when I
was running a smtp server in a dangerous area.  Perhaps that is what
you are seeing: the remote site wants some indication that a user
isn't trying to trivially spoof mail.

No idea why the hosts would not do this consistently, though.  All my
models suggest they should do this all the time.

--woody

-- 
Robert Wooddell Weaver		email:  robertw @
 softiron .
 com
Senior Systems Engineer		voice:  510.855.2072
SoftIRON Systems		pager:  510.702.4334
			alpha page at:  http://www.metrocall.com/Page.html


References:
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From: Jim Lester <jim . lester @ ljo . dec . com>
Next: Re: Need volunteer FTP archive site to host new security software
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