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Rich Matheisen [MVP]  
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 More options Aug 23 2007, 9:39 pm
Newsgroups: microsoft.public.exchange.admin
From: "Rich Matheisen [MVP]" <richn...@rmcons.com.NOSPAM.COM>
Date: Thu, 23 Aug 2007 21:39:38 -0400
Local: Thurs, Aug 23 2007 9:39 pm
Subject: Re: Exchange --> Greylisting

ralfthewise <ralfthew...@gmail.com> wrote:
>We use greylisting as well and have the same problem when people try
>to email us from exchange boxes.  Is there anything we can do if we're
>on the receiving end of this problem?  Very frustrating when a poorly
>implemented server on MS part prevents the use of an anti-spam tool.

It doesn't prevent your use of greylisting at all. The problem lies on
the sender's side, not the recipient's.

What do you do about sending servers that only retry so infrequently
that the greylist "memory" expires and every retry on their part is
greylisted?

>Does it happen with all 4XX SMTP codes?  Maybe we could use something
>other than 451 and exchange would handle it better.

I doubt it.

--
Rich Matheisen
MCSE+I, Exchange MVP
MS Exchange FAQ at http://www.swinc.com/resource/exch_faq.htm
Don't send mail to this address mailto:h.p...@getronics.com
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