I received this message that has some reference to SPF..... any help will be appreciated....




When trying to deliver your message, the mail server at host=ubuntuMaster.sfnet.com/sfnet.com,from=mail.sfnet.com encountered
problems with the following addresses:

For <HIDDEN@david-mcdermott.com>, Site david-mcdermott..com (216.69.186.201) before data sent: 550 5.7.1 SPF unauthorized mail is prohibited.

For a more detailed explanation see http://netwinsite.com/surgemail/deliver_failed.htm

--
Wayne Gregori
Office: 510-895-1066
Cell: 510-219-3887