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ralfthewise  
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 More options Aug 27 2007, 3:18 pm
Newsgroups: microsoft.public.exchange.admin
From: ralfthewise <ralfthew...@gmail.com>
Date: Mon, 27 Aug 2007 12:18:01 -0700
Local: Mon, Aug 27 2007 3:18 pm
Subject: Re: Exchange --> Greylisting
On Aug 23, 6:39 pm, "Rich Matheisen [MVP]"
<richn...@rmcons.com.NOSPAM.COM> wrote:
> It doesn't prevent your use ofgreylistingat all. The problem lies on
> the sender's side, not the recipient's.

Yes, but when I go to management and tell them, "There's this helpful
practice to reduce spam called greylisting, but some mail sent from
Exchange systems may silently get dropped", they tell me no way.

> 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?

Well, we haven't encountered that problem yet, but I guess you could
just increase the retry window to accomodate them.  That may not scale
well for really large sites, but any company with less than a couple
thousand employees would probably be fine.

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