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From: kenc@suntan.viewlogic.com (Kenstir)
Newsgroups: comp.mail.sendmail
Subject: Mail filters
Keywords: filter
Message-ID: <1991Mar15.195109.12234@viewlogic.com>
Date: 15 Mar 91 19:51:09 GMT
Sender: news@viewlogic.com (News Administrator)
Organization: Viewlogic Systems, Inc., Marlboro, MA
Lines: 35
Originator: kenc@madmax


I'd like to set up a filter on my mail, and I'd like it
to happen between the time sendmail gets its paws on the
text and the time it puts the file in /usr/spool/mail.

I *have* been successful in doing this via two methods,
neither of which is completely satisfactory:

1.  Set up the YP alias:
	kenc:"|/u/kenc/mail-filter kenc@host"

    Set up /u/kenc/mail-filter:
	awk -f foo.awk | /usr/lib/sendmail -n $1

PROBLEMS:  The mail-filter gets run on the machine the mail
from which it is sent and also the machine *to* which it is sent.
This also creates extra sysadmin work setting up the aliases.

2.  Set up a .forward:
	"|/u/kenc/mail-filter2 kenc"

    And then in /u/kenc/mail-filter2:
	awk -f foo.awk >> /usr/spool/mail/kenc

PROBLEMS:  I'm not doing any file locking and I'm sure eventually
I would run into race conditions.



I would greatly appreciate any advice!
-- 
Kenneth H. Cox
Viewlogic Systems, Inc.
kenc@viewlogic.com
..!harvard!cg-atla!viewlog!kenc