Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/18/84; site gatech.CSNET
Path: utzoo!linus!gatech!spaf
From: spaf@gatech.CSNET (Gene Spafford)
Newsgroups: net.mail
Subject: Re: Sendmail problems - HELP!
Message-ID: <434@gatech.CSNET>
Date: Sat, 20-Apr-85 13:35:31 EST
Article-I.D.: gatech.434
Posted: Sat Apr 20 13:35:31 1985
Date-Received: Sun, 21-Apr-85 04:28:49 EST
References: <325@mnetor.UUCP> <655@plus5.UUCP> <403@utai.UUCP> <2773@sdcc3.UUCP>
Reply-To: spaf@gatech.UUCP (Gene Spafford)
Organization: The Clouds Project, School of ICS, Georgia Tech
Lines: 48
Summary: 

I thought I'd throw my comments into this discussion.

My sendmail files support input addresses in any of the following
formats:
	name@site
	site!name
	name%site
	site^name	(backwards compatability)
	site:name	(ditto)

Each may (optionally) specify a domain and/or comments.

All the addresses first get rewritten as name@site, preserving
any given domain.

Next, if the domain is one of a sequence I know about (UUCP, ARPA, CSNET,
DEC, BITNET, MAILNET, GTNET, LOCAL) then I rewrite the address
according to the rules for that network and forward it on (to the site,
or to the gateway).
For example, if I get an address (from a local site) of the form:
	person@site.bitnet
it ends up being sent to:
	person%site.BITNET@wiscvm.ARPA

If the sitename is not given a specific domain name, then it is compared
against site name lists for the following groups, in this order:
	local GTNET sites (via SMTP)
	local UUCP sites (1 hop away)
	all CSNET hosts
	all UUCP hosts
	all ARPA hosts
	all BITNET hosts
	DEC E-net hosts I know about (I don't have a complete list)

a match at any point appends the proper domain to the address, and the
process is reiterated.  Any address which falls through the whole
process is treated as an error, and mailed back with an
"unknown host or domain" error.

I'll be happy to send copies of the configuration files to anyone
interested.  We have connections to UUCP and CSNET, plus 5 sites
on a shared Ethernet, so I can't say that any bizarre changes
to support ARPA are easy or known to work in this environment.
-- 
Gene "4 months and counting" Spafford
The Clouds Project, School of ICS, Georgia Tech, Atlanta GA 30332
CSNet:	Spaf @ GATech		ARPA:	Spaf%GATech.CSNet @ CSNet-Relay.ARPA
uucp:	...!{akgua,allegra,hplabs,ihnp4,linus,seismo,ulysses}!gatech!spaf