>Should we mention that these should only be used to reduce FPs from >blacklists that follow, and that are expected to not list legitimate >clients. ...
Depends on the whitelist. I'm working on Spamhaus' new whitelist where our goal is to list only mail sources clean enough that you can skip the rest of the filtering. (So far so good, but it's still pretty small.) You're welcome to use it. The IP address version is at swl.spamhaus.org. For people who like DKIM, there's also domain version at dwl.spamhaus.org. It lists domains, with the ONLY use that we support being DKIM d= signing domains on mail with valid signatures. See RFC 5518. The terms of use are the same as the rest of the Spamhaus lists, moderate number of queries are fine, larger than that and you have to buy a feed. If you already have a Spamhaus feed, the SWL and DWL should now be included in it. The plan for the SWL and DWL is that we will eventually charge for listings, but for now it's free, in limited beta. See http://www.spamhauswhitelist.com/en/, and drop me a line if you'd like an invitation. R's, John
