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Date:      Mon, 25 Mar 2002 18:34:43 +0100
From:      Brad Knowles <brad.knowles@skynet.be>
To:        Terry Lambert <tlambert2@mindspring.com>, Dag-Erling Smorgrav <des@ofug.org>
Cc:        Taylor Dondich <thexder@lvcm.com>, chat@freebsd.org
Subject:   Re: qmail (Was: Maintaining Access Control Lists )
Message-ID:  <p05101518b8c50f61a513@[10.0.1.8]>
In-Reply-To: <3C9F1EF6.CB28EDD7@mindspring.com>
References:  <F61GQUEYvZmDvHbYxPo0000a6bd@hotmail.com>	 <20020323002608.B20699@rain.macguire.net> <3C9C84CF.2090300@flash.net>	 <20020323084327.A354@rain.macguire.net> <3C9DF87D.5050306@cream.org>		<p05101505b8c430e28572@[10.0.1.9]>	 <000c01c1d3ab$6d2c6960$6600a8c0@penguin> <xzp3cyo7rbu.fsf@flood.ping.uio.no> <3C9F1EF6.CB28EDD7@mindspring.com>

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At 4:58 AM -0800 2002/03/25, Terry Lambert wrote:

>  Wedging per domain mail queues into Postfix is much harder
>  than wedging them into sendmail.  They are almost natural
>  in sendmail (well, older versions of sendmail; the newer
>  stuff breaks a lot of intersting things by putting security
>  barriers in the way).

	Per-domain mail queues is one of the few things that Wietse had 
yet to support in postfix as of the last time I did anything with it. 
I believe that it was something added soon thereafter, but I haven't 
been able to confirm that.

>  If you do wedge them in, then on an ETRN/ATRN, you are
>  guaranteed a 100% hit rate on queue messages, instead of
>  just the percentage of the main queue of the messages for
>  a particular domain.

	Indeed, that is a problem.  And if you get 50-60 ETRN requests 
per second (as our business-class mail server was getting), this 
causes untold amounts of unholy hell.

-- 
Brad Knowles, <brad.knowles@skynet.be>

Do you hate Microsoft?  Do you hate Outlook?  Then visit the Anti-Outlook
page at <http://www.rodos.net/outlook/>; and see how much fun you can have.

"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
     -Benjamin Franklin, Historical Review of Pennsylvania.

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