Xref: utzoo comp.mail.misc:2617 comp.mail.uucp:3764 comp.unix.questions:17808 comp.mail.sendmail:1170 news.newusers.questions:950
Path: utzoo!attcan!uunet!samsung!gem.mps.ohio-state.edu!rpi!tale
From: tale@pawl.rpi.edu (David C Lawrence)
Newsgroups: comp.mail.misc,comp.mail.uucp,comp.unix.questions,comp.mail.sendmail,news.newusers.questions
Subject: Re: Can not mail off-site, RTFM not much help
Message-ID: <1989Nov19.010922.16977@rpi.edu>
Date: 19 Nov 89 01:09:22 GMT
References: <801@dsacg2.UUCP> <89Nov18.122827est.2712@neat.cs.toronto.edu>
Distribution: na
Organization: Rensselaer Polytechnic Institute, Troy NY
Lines: 27

In <89Nov18.122827est.2712@neat.cs.toronto.edu> lamy@ai.utoronto.ca
(Jean-Francois Lamy) writes:
JF> you can derive an address that has a better chance of working for
JF> you, namely,
JF> 	attcan!utzoo!henry@uunet.uu.net
JF> and because utzoo appears in the UUCP routing data you can shorten that to
JF> 	utzoo!henry@uunet.uu.net
JF> The last address you tried is a common abbreviation used on sites that have
JF> the UUCP routing data available to them; it means look up utzoo in the UUCP
JF> maps and send it there, or send it to a machine that you know can deal with
JF> this.  There is little hope that this would work on your machine.

You should be very careful, however, in mixing ! and @ style addresses.
There is no universally accepted standard (of which I am aware; I am
sure someone will flame me if I am wrong) regarding precedence.  The
only operator used with third-party mailing in @ addresses is "%".
Though many sites understand the above address and will process it as
Jean-Francois describes, other will (not necessarily incorrectly, since
there is no precedence rule) attempt to route the mail through attcan
to utzoo, expecting it to be sent to henry@uunet.uu.net.  If the site
on the rhs of the @ knows where the UUCP site is which you are tring to
reach (as in Jean-Francois's second example) you are probably safer
using %-style notation -- henry%ytzoo.UUCP@uunet.uu.net.

Dave
-- 
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