Isn't rule 0 the final path?

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2 total messages Started by Larry Blair Sun, 05 Feb 1989 09:04

#3153

Author: Larry Blair
Date: Sun, 05 Feb 1989 09:04

17 lines
1158 bytes

Reading sendmail manual (as distributed by Sun), it appears that path given
to sendmail is parsed by rule 3, then 0, which determines which mailer to
use.  The To: address is then parsed by 3, and in the case of uucp mail, 23.
The From: goes through 3, then 13.

I decided that I didn't like the way my To: lines went out, so I started
mucking with ruleset 5, called by 23.  One of the (apparently) more
important things I did was to remove the rule that generated u%h and add
some that would generate u@h.  I didn't touch ruleset 0, or any ruleset
called by 0.

While sendmail -bt says that ruleset 0 works correctly and ruleset 23 works
the way I want, the value of $h!$u passed to the mailer is messed up.
Specifically, if I enter a!b!c, the mailer gets a!c@b.  Who's screwing
it up?
-- 
Larry Blair   ames!vsi1!lmb   lmb@vicom.com

Re: Isn't rule 0 the final path?

#3155

Author: Juergen Wagner
Date: Mon, 06 Feb 1989 06:02

21 lines
1332 bytes

The process of finding a mailer/host/mailbox is not just captured by rulesets
3 and 0. The function parseaddr which
	"Parses an address and breaks it up into three parts: a
	 net to transmit the message on, the host to transmit it
	 to, and a user on that host."
does the following:

o  parse the address into tokens;
o  rewrite it by ruleset #3 (canonicalization);
o  rewrite it by ruleset #0 (giving $# mailer $@ host $: mailbox);
o  call buildaddr to build an address from the resulting specification.

Now, buildaddr checks the mailer and the host, and then calls ruleset #2 to
do recipient rewriting, calls the mailer-specific recipient rewriting ruleset,
and calls ruleset #4 to clean up everything (externalize).

To summarize, there is more to it than just #3 and #0.

-- 
Juergen Wagner		   			gandalf@csli.stanford.edu
						 wagner@arisia.xerox.com

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