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Whitelisting for Greylisting

ghazlewood

Basic Pleskian
I waded into setting up greylisting as described in this thread:

http://forum.swsoft.com/showthread.php?s=&threadid=28645

This was necessitated after seeing a huge increase in spam on my Plesk server (since 17th September or so). After setting it up yesterday at about 16.00 things have been, quite simply amazing! A very many thanks to everyone who has contributed.

I'm interested in others experiences of the need to whitelist though. I've snagged a copy of the PureMagic CVS whitelist and have added a few others in myself. I've noticed a couple of large (but not the usual) ISPs who seem to have given up on delivery (in particular iomartmail.com). Is it wise to add them to the whitelist manually.

How do others deal with whitelisting? Is there a good source of IPs which don't deal well with greylisting for whatever reason?
 
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