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Path: utzoo!linus!philabs!cmcl2!seismo!columbia!chris
From: chris@columbia.UUCP (Chris Maio)
Newsgroups: net.mail
Subject: Re: colons in mail addresses (domains and UCB Mail)
Message-ID: <502@columbia.UUCP>
Date: Sat, 27-Apr-85 15:00:23 EDT
Article-I.D.: columbia.502
Posted: Sat Apr 27 15:00:23 1985
Date-Received: Sun, 28-Apr-85 07:49:38 EDT
References: <684@plus5.UUCP> <1698@decwrl.UUCP> <485@decuac.UUCP> <498@decuac.UUCP>
Reply-To: chris@columbia.UUCP (Chris Maio)
Organization: Columbia University
Lines: 18

There are two problems here - when sending mail to recipients on multiple
hosts, the mailer should ensure that the addresses are rewritten properly
for each destination host; sendmail is good for this in general, but uucp
presents some difficulty here because sendmail assumes this only need be
done on a per-mailer basis.  To do things exactly right would probably
adding code to sendmail.cf proportional to the number of uucp neighbors you
have, or adding extra code to sendmail itself.

The other problem is that Berkeley Mail has all sorts of garbage in it
that is specific to Berkeley, including heuristics for rewriting addresses
and a hardwired table of Berkeley host names.  It also does the wrong thing
when the "r" command sees an address with no hostname delimiters (e.g. "!"
or "@") which I assume was meant to deal in a very poor way with dumb mailers.
Unfortunately, you can't get around all of these problems with sendmail; you
have to fix Mail (I thought the mail interface was one of the things DEC was
going to improve in 4.2bsd for Ultrix?).

- Chris