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From: rwhite@nusdhub.UUCP (Robert C. White Jr.)
Newsgroups: comp.mail.headers,comp.sources.wanted
Subject: Mail Headers Definitions for YACC
Message-ID: <279@nusdhub.UUCP>
Date: Fri, 27-Nov-87 20:39:53 EST
Article-I.D.: nusdhub.279
Posted: Fri Nov 27 20:39:53 1987
Date-Received: Mon, 30-Nov-87 01:16:07 EST
Organization: National University, San Diego
Lines: 17
Xref: mnetor comp.mail.headers:223 comp.sources.wanted:2939

Hi,
	I need the yacc and lex definitions for mail headers.
I don't know enough to ask correctly [by number] for what
I want.  If the yacc and lex grammers are not available, but
there is a source, or someone can tell me where [provide me
with] the definitions in plain text, I would be grateful.

	Basically I need to _prevent_ some machines on our
hub from mailing to others.  The routing is not so much the
point, but I need to be able to burst the headers destined
for rmail, and preform surgery on some.

	The real issue is that we have some destinations which
_do_ wnat mail, but only from certain sources, so I need to
become a guardian for these sites.

Rob.