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Re: Research question: How many legitimate mail sources are out there?

To: matthew@xxxxxxxxx
Subject: Re: Research question: How many legitimate mail sources are out there?
From: John Levine <johnl@xxxxxxxx>
Date: 14 Aug 2005 00:41:02 -0000
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>I could live with something like: my greylisting server whitelisted x
>IP addresses (I'm figure John Levine could give us this number quite
>quickly for his a "several hundred individual mailboxes, a few dozen
>mailing lists, and the abuse.net message forwarding system.")

It's about 22,000 addresses.  My fixed greylist covers about 3000 more
addresses in CIDR blocks, of which probably no more than a few hundred
send mail.

I have no idea how this relates to the pattern a larger ISP would see.

R's,
John

References:
- Research question: How many legitimate mail sources are out there?
  - From: Matthew Elvey

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