Hi all! Are there any plans to implement SPF-checks in RC? http://www.openspf.org/
Could be quite simple to implement using libspf2.so and just one function call. http://www.libspf2.org/
Or just check for Header Fields related to it as "Received-SPF:") in order to notify mail reader about "MAIL FROM:" forgery? Or at least, option to mark messages as spam if SPF: FAIL is detected in the Header. Most of the biggest mail providers as Hotmail, Google etc. and lot of Enterprise/personal mail servers have SPF implemented, including mail servers as Sendmail, MS Exchange, Qmail, Exim, so this is really good thing to have. Microsoft have added support for it with their own RFC http://www.microsoft.com/senderid
See also: http://www.ietf.org/rfc/rfc4408.txt
Regards! Dako