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Path: utzoo!mnetor!seismo!mimsy!cvl!umd5!zben
From: zben@umd5 (Ben Cranston)
Newsgroups: comp.mail.headers,comp.mail.uucp
Subject: Re: more about autorouting
Message-ID: <1423@umd5>
Date: Wed, 21-Jan-87 03:39:47 EST
Article-I.D.: umd5.1423
Posted: Wed Jan 21 03:39:47 1987
Date-Received: Wed, 21-Jan-87 22:44:50 EST
References: <14396@amdcad.UUCP> <4611@mit-eddie.MIT.EDU>
Reply-To: zben@umd5.umd.edu (Ben Cranston)
Organization: University of Maryland, College Park
Lines: 38
Summary: Reference to source routing
Xref: mnetor comp.mail.headers:97 comp.mail.uucp:163

In article <4611@mit-eddie.MIT.EDU> jbs@eddie.MIT.EDU (Jeff Siegal writes:

> ...  The syntax for this is @host1:@host2:user@host3.      [sic -zben]   
> I've been told that the ":"'s should be ","'s except for the
> right-most one (as the Berkeley sendmail configuration does), but I've
> been unable to find this stated in RFC822 (could someone send me a
> reference, if the ","'s are actually correct).

See extended BNF on page 27 (section 6.1).

   route = 1#("@" domain) ":"

The parentheses are groupers, the 1# syntax is a comma-separated list of
from 1 to (arbitrary) members.  Thus this rule matches things like:

   @domain:
   @domain,@domain:
   @domain,@domain,@domain:

   addr-spec = local-part "@" domain
   mailbox = addr-spec / phrase route-addr
   route-addr = "<" [route] addr-spec ">"

Thus a "mailbox" can be something of the form:

   phrase <@domain,@domain,@domain:local@domain>

like:

   Ben Cranston <@wiscvm.wisc.edu,@umd2.bitnet:zben@umd5.umd.edu>

("Oh no, we've created a Finster!")
("You mean monster, don't you?")
("No, his name is Finster!")
-- 
                    umd5.UUCP    <= {seismo!mimsy,ihnp4!rlgvax}!cvl!umd5!zben
Ben Cranston zben @ umd2.UMD.EDU    Kingdom of Merryland UniSys 1100/92
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