I'm not really familiar with Exim but in general you'll get much better
performance having your MTA refuse to accept mail for the non-existant
users. The MTA can do this at the header check stage ebfore actually
allowing the sending server to deliver the message body. This can reduce
the bandwidth used and the CPU cycles used on your end. Especially if
your virus and spam scanning the messages.
This can make a HUGE difference if the percentage of spam mails intended
for non-existant users is high.
Brian Winkers
Ultri
Hereward Cooper wrote:
Hey guys,
I'm in the process of trying to harmonize all my mail systems with
Exim4+SpamAssassin+DBMail.
But I'm having problems getting Exim4 to deliver mail to the right
place. [I've been using the docs that come with the Debian package -
exim4-dbmail.txt.gz]
Basically I have a list of about 5 domains, and say 3 users on each of
those domains - some of the users actually exsist on the system, the
others are just DBMail aliases.
I've been playing around with a ton of various exim configs - and the
only one which I can get most of the mail with is this:
cat /etc/exim4/conf.d/transport/30_exim4-config_dbmailconfig
dbmail:
driver = pipe
command = "/usr/sbin/dbmail-smtp -u $local_part"
return_fail_output
user = dbmail
But what I want is Exim to NOT check the exsistance of any local users -
and simply forward all mail onto DBMail - and let DBMail bounce anything
that it can't deliver.
One of the main problems I was having was exim not being able to tell
the difference between the same $local_part at a difference $domain. I
tried using
command = "/usr/sbin/dbmail-smtp -d [EMAIL PROTECTED]"
But it became very irratic with some users getting mail and others not.
strange. Attacted is an example from the log of a message that seems
to be delivered fine but just doesn't show up anywhere!
Well any help would be great - and even examples of what conf files
people are using would be good.
Thanks,
--Coops
------------------------------------------------------------------------
From:
root <[EMAIL PROTECTED]>
Date:
Mon, 26 Jul 2004 14:02:44 +0100
To:
[EMAIL PROTECTED]
To:
[EMAIL PROTECTED]
Received:
from root by thepixiepeople.co.uk with local (Exim 4.32) id
1Bp57s-00036N-5O for [EMAIL PROTECTED]; Mon, 26 Jul 2004
14:02:49 +0100
Message-ID:
<[EMAIL PROTECTED]>
X-SA-Exim-Connect-IP:
<locally generated>
X-SA-Exim-Mail-From:
[EMAIL PROTECTED]
X-Spam-Checker-Version:
SpamAssassin 2.63 (2004-01-11) on thepixiepeople.co.uk
X-Spam-Status:
No, hits=0.0 required=5.0 tests=none autolearn=ham version=2.63
X-SA-Exim-Version:
4.0 (built Sat, 24 Apr 2004 12:31:30 +0200)
X-SA-Exim-Scanned:
Yes (on thepixiepeople.co.uk)
2004-07-26 13:49:49 1Bp4vN-000315-Vl SA: Debug: SAEximRunCond expand returned:
'1'
2004-07-26 13:49:49 1Bp4vN-000315-Vl SA: Debug: check succeeded, running spamc
2004-07-26 13:49:57 1Bp4vN-000315-Vl SA: Action: scanned but message isn't
spam: hits=1.1 required=5.0 (scanned in 8/8 secs | Message-Id: [EMAIL PROTECTED]
k). From <[EMAIL PROTECTED]> (host=anchor-post-32.mail.demon.net
[194.217.242.90]) for [EMAIL PROTECTED]
2004-07-26 13:49:57 1Bp4vN-000315-Vl <= [EMAIL PROTECTED]
H=anchor-post-32.mail.demon.net [194.217.242.90] P=esmtp S=1207 [EMAIL PROTECTED]
n.co.uk
2004-07-26 13:49:57 1Bp4vN-000315-Vl => hcooper <[EMAIL PROTECTED]>
R=local_user T=dbmail
2004-07-26 13:49:57 1Bp4vN-000315-Vl Completed
------------------------------------------------------------------------
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