Path: utzoo!attcan!uunet!seismo!rick
From: rick@seismo.CSS.GOV (Rick Adams)
Newsgroups: comp.mail.sendmail
Subject: Re: mixed addresses
Summary: nonsense
Message-ID: <44378@beno.seismo.CSS.GOV>
Date: 18 Jul 88 22:02:39 GMT
References: <8807142016.dusip.andrew@stl.stc.co.uk>
Organization: Center for Seismic Studies, Arlington, VA
Lines: 15

> You have brought up a nasty.  In fact you are highlighting two
> of them.  Firstly '%' as an address character.  IT IS NOT LEGAL RFC822.
> It remains around for historical compatibility (RFC7?? --- read the
> first page of 822 if you really want to know which).

Nonsense. It is perfectly legal under RFC822 (look at the grammar).
The fact that you are mucking with the LOCAL-PART, which you are supposed
to leave totally alone, is the cause of the problem.

Anyone who gives % precedence over ! should fix their mailer.
% is NOT a synonym for @. It is a valid part of the local-part
of the address and should not be interpreted my any site save
the destination machine.

--rick