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Path: utzoo!watmath!clyde!burl!hou3c!cak@Purdue.ARPA
From: cak@Purdue.ARPA (Christopher A Kent)
Newsgroups: net.mail.headers
Subject: Re: What are SMTP commands "EXPN" and "VRFY" good for?
Message-ID: <8409202127.AA13887@merlin.ARPA>
Date: Thu, 20-Sep-84 17:27:00 EDT
Article-I.D.: hou3c.849
Posted: Thu Sep 20 17:27:00 1984
Date-Received: Thu, 4-Oct-84 03:22:35 EDT
Sender: ka@hou3c.UUCP (Kenneth Almquist)
Lines: 20
To: William G. Martin 
Cc: wmartin@ALMSA-1.ARPA, header-people@MIT-MC.ARPA
In-Reply-To: Your message of Tue 18 Sep 84 08:31:39-MDT. <8409181438.AA07422>


	From: William G. Martin 
	Subject: Re: What are SMTP commands "EXPN" and "VRFY" good for?
	
	The recent discussion of the EXPN and VRFY commands included a couple
	mentions of using EXPN to implement a command that would let a user
	discover who is on a remote mailing list. I had never heard of such
	a command before, but, now that I know it is possible, I want it!
	
My implementation of the finger protocol for Unix has this feature; if
you finger a mailing list on a remote site, the server will expand it
and finger all the individual members (recursively following lists, of
course).

As a separate issure, I'd like to see this kind of behaviour more
formally described with a new finger protocol spec (there are a number
of problems with the current one). Anyone interested in collaborating?

chris
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