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Path: utzoo!mnetor!seismo!husc6!mit-eddie!genrad!decvax!ucbvax!hplabs!hpcea!hpfcdc!hpfclp!diamant
From: diamant@hpfclp.HP.COM (John Diamant)
Newsgroups: comp.mail.misc
Subject: Re: Precedence in network mail addresses
Message-ID: <8120003@hpfclp.HP.COM>
Date: Fri, 15-May-87 20:08:38 EDT
Article-I.D.: hpfclp.8120003
Posted: Fri May 15 20:08:38 1987
Date-Received: Sun, 17-May-87 11:53:07 EDT
References: <588@bsu-cs.UUCP>
Organization: HP, Fort Collins, CO
Lines: 25

> Also I've seen addresses with "@!" and "!@"
> in them.  Any ideas on what to do with these???
> 
> kyle jones   <kyle@xanth.cs.odu.edu>
> old dominion university, norfolk, va

The first form ("@!") is total trash and I haven't the faintest idea what
you could do with it (I've never seen one either).  The second form ("!@")
occurs when mail is sent from RFC-822 world into UUCP and the From: line
had a source route in it and the gateway doesn't know what to do with it.
I regularly see mail coming from hplabs (my ARPANET gateway) of the form:

hplabs!@foo:user@bar

If this is the kind of thing you are talking about, you can ignore everything
up to the first @ and treat it like a standard RFC-822 source route.  Of
course, you aren't allowed to do that by RFC-822, since this address
is already illegal and no standard is going to tell you what to do with
an illegal address.


John Diamant
SCO				UUCP:  {hplabs,hpfcla}!hpfclp!diamant
Hewlett Packard Co.		ARPA Internet: diamant%hpfclp@hplabs.HP.COM
Fort Collins, CO