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Re: Underscore in Host names

To: Nicholas_Briggs.PARC@xerox.com
Subject: Re: Underscore in Host names
From: Matti Aarnio <mea@utu.fi>
Date: Thu, 25 Aug 1994 20:11:48 +0300
Cc: zmailer@cs.toronto.edu
In-Reply-To: <94Aug25.075103pdt.14429(1)@alpha.xerox.com> from "Nicholas_Briggs.PARC@xerox.com" at Aug 25, 94 05:50:41 pm

> No, underscore is valid in host names in DNS, but underscore is
> not valid in a hostname for an RFC821 SMTP transaction.
> 
> I do, though, think that zmailer ought to be more lenient on this one.

	Strict RFC-821 is actually pretty stupid, and forbids
	common %-hack, et.al.   Therefore the   smtpserver/rfc821scn.c
	is somewhat more lenient than the standard would require..
	Adding underscore to the repertoire was not difficult.

		/Matti Aarnio	<mea@utu.fi> <mea@nic.funet.fi>

Follow-Ups:
- Re: Underscore in Host names
  - From: John Gardiner Myers <jgm+@CMU.EDU> (Thu, 25 Aug 1994 21:22:05 +0300)

References:
- Re: Underscore in Host names
  - From: Nicholas_Briggs.PARC@xerox.com

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