Greylisting.Org > Implementations

Exchange

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Greylist is simply a greylist program for Exchange 2003 ( should work on 2000 ) which will delay incoming mail for a couple of minutes. In a test environment it blocked 98% of all spam. More information: www.grynx.com/projects/greylist/

XWall is a spam filter that supports greylisting for Microsoft Exchange (as well as other SMTP servers). It appears to be very capable in terms of the features listed on the website: www.dataenter.co.at/products/xwall.htm