on 9/1/2011 10:39 AM Kenneth Porter spake the following: > --On Wednesday, August 31, 2011 5:48 PM -0400 Mailing Lists > <mailinglist at theflux.net> wrote: > >> http://www.openspf.org/Introduction - SPF FTW > > DKIM is another possibility. > > Blizzard (the game company) signs some (not all) of its mail with DKIM, and > I use that to spot obvious account-theft scams. Unfortunately some servers > break the signature, so it can be difficult to use and verify. > > <http://en.wikipedia.org/wiki/DomainKeys_Identified_Mail> I get TONS of spam with legitimate DKIM signatures...