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Date:      Wed, 26 Nov 97 10:23:35 -0500
From:      Timothy J Luoma <luomat@peak.org>
To:        "Jordan K. Hubbard" <jkh@time.cdrom.com>
Cc:        "Gary Palmer" <gpalmer@FreeBSD.ORG>, "Jonathan M. Bresler" <jmb@FreeBSD.ORG>, chat@hub.freebsd.org
Subject:   Re: major push by spammers? 
Message-ID:  <199711261523.KAA03242@luomat.peak.org>
In-Reply-To: <18314.880528819@time.cdrom.com>
References:  <18314.880528819@time.cdrom.com>

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	Author:        "Jordan K. Hubbard" <jkh@time.cdrom.com>
	Original-Date: Tue, 25 Nov 1997 23:20:19 -0800
	Message-ID:    <18314.880528819@time.cdrom.com>

> Hmmm.  What would be a better code if one simply wished to toss it away?

451 is a temp error.... 551 is a permanent one


> And I wonder if running a caching named on mail.freebsd.org wouldn't
> perhaps be a good idea, if only to avoid the scenario of temporary DNS
> outtages.  Would it even help?

I don't think so.

If it is cached than it would not fail.  If it was not cached and there was  
a temporary DNS outtage at your nameservers, it would bounce.


Sending a 500-level permanant bounce is not really a good idea in general...  
You'd be surprised how often there are temp DNS timeouts.... too man damn  
people using the Internet these days ;-)

However, that said, sending a 400-level sets you up for some bad  
configurations of other systems which will retry every 5 minutes for 5 days  
before turning a temp failure into a permanent one... Enough of those could  
be a real drain.

TjL

ps -- I have seen more spams in the last week than in the last 3 months.




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