Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.3 alpha 4/3/85; site decuac.UUCP
Path: utzoo!watmath!clyde!cbosgd!decuac!avolio
From: avolio@decuac.UUCP (Frederick M. Avolio)
Newsgroups: net.mail
Subject: Re: colons in mail addresses (domains and UCB Mail)
Message-ID: <511@decuac.UUCP>
Date: Sat, 11-May-85 21:42:45 EDT
Article-I.D.: decuac.511
Posted: Sat May 11 21:42:45 1985
Date-Received: Sun, 12-May-85 06:11:43 EDT
References: <485@decuac.UUCP> <498@decuac.UUCP> <502@columbia.UUCP> <1801@topaz.ARPA>
Organization: ULTRIX Applications Center, MD
Lines: 99
Summary: Fix for UCB/mail's bad handling of addresses (domains)


    The original articles were relating to UCB mail and how it is too
smart for its own good.  The problem, in summary, is that ucb/mail
tries to do address resolution based on assumptions which are probably
not valid for your site.  Chuck Hendrick <hedrick@topaz.ARPA> shared
some fixes he made.

    With domain addressing in mind, it becomes a big hassle when the
mailer you are using garbles the address.  I found this to be a very
big problem when we switched over to domain-based address mail
software.

The following shows what happens...

		Using /usr/ucb/mail, I read my mbox and look at
		message #5.  Please note the Mail heading fields
		From:, To:, and Cc:  I removed the "Received-by
		lines to save space

     % mail -f
     "/usr/users/avolio/mbox": 5 messages
     & 5
     Message  5:
     From mogwai!mogwai.UUCP!smith Fri May 10 18:01:09 1985
		~
     Date: Fri, 10 May 85 16:52:37 edt
     From: smith@mogwai.UUCP (Jane Smith)
     Message-Id: <8505102052.AA08546@mogwai.UUCP>
     To: gang
     Subject: SUBJECT1
     Cc: decuac!avolio, system, avolio@decuac.UUCP
     Status: RO

     Message follows...

		Note the local and non-local addresses and the
		"mixed notation" of paths in the Cc: line ABOVE
		Now I reply -- little r means to all on the list
		*except me*

& r 5
To: mogwai:gang@uucp smith@mogwai.UUCP
Subject: Re:  News NEWS software
Cc: avolio@decuac.UUCP mogwai:system@uucp

~q
Interrupt
& q

     Yuck, right? the "arpa-style" address for smith it got right.  The
local (on mogwai) addresses it screwed up.  Why?  Because  1) it
doesn't handle dots the way we want and 2) it doesn't say "with regard
to mogwai" the way we want.  It *does* recognize decuac!avolio as *me*
so it doesn't appear, but it does *not* recognize avolio@decuac.UUCP.

     Well I stayed up late and made changes to the code.  I made the
changes suggested by Chuck and a couple more. (I will not reproduce
Chucks changes as they were previously posted.  See references.)

    1.  I made all the changes Chuck suggested *with the exception of*
tacking on a domain to the value of gethost after it is put into
localhost.  I left localhost with the value of gethost.  This because
I want "decuac!avolio", "avolio@decuac.UUCP", "avolio@decuac.DEC", all
to be recognized as "me" and to be left off the address list. (BTW,
Remember to take '.' off the list of metanet characters on line 59 of
config.c.)

     2.  The only addition I made was a function called hostpart
(takes a string and returns everything up to a NULL or a DOT).  Then I
replaced two strcmp's as follows

> 		if (strcmp(np->nt_machine, hostpart(nbuf)) == 0)

> 	if (!icequal(hostpart(cp), localhost))

Now, after these changes, I try the same example, this time with success.

     % mail -f
     "/usr/users/avolio/mbox": 5 messages
     & r 5
     To: gang@mogwai.uucp smith@mogwai.UUCP
     Subject: Re:  SUBJECT1
     Cc: system@mogwai.uucp

     ~q
     Interrupt
     & q

		Notice that it correctly expands all of the
		addresses local to mogwai and it correctly
		leaves both "decuac!avolio" and
		"avolio@decuac.UUCP" off of the list of
		addressees.

     It works.


-- 
Fred Avolio      {decvax,seismo}!decuac!avolio      301/731-4100 x4227