Version 0 of Greylisting

Updated 2004-06-09 17:52:20 by SRIV

In short, a method for reducing spam at the MTA (mail server) outlined at http://projects.puremagic.com/greylisting/whitepaper.html .

From the whitepaper:

 "Greylisting has been designed from the start to satisfy certain criteria:

1. Have minimal impact on users
2. Limit spammers ability to circumvent the blocking
3. Require minimal maintenance at both the user and administrator level

 User-level spam blocking, while somewhat effective has a few key drawbacks that make its use in the continuing
 spam war undesirable. A few of these are:

1. It provides no notice to the senders of legitimate email that is falsely identified as spam.
2. It places most of the costs of processing the spam on the receivers side rather than the spammers side.
3. It provides no real disincentive to spammers to stop wasting our time and resources.

 As a result, Greylisting is designed to be implemented at the MTA level, where we can cause the spammers the most
 amount of grief."