Thu, 15 Aug 2013 22:56:53 -0700 skrev Rob Tanner <rtan...@linfield.edu>:
> I've googled around a quite a bit and while I can find lots of > instruction on what I need in order for Postfix to validate incoming > mail, I find nothing about what I need to do to make sure Postfix > does whatever it needs to do to make sure the MTA receiving the mail > validates it. And the dearth of information in that category also You can't, since it's up to the receiver to do whatever checks they wish. That includes SPF. > begs the question, is there a special header that Postfix need to > include in the message (as in DKIM) or do the receiving MTAs, if > they're setup to use SPF just automatically do the DNS lookups? What > is it, besides adding the correct the DNS TXT records, do I need to > do on my end. Nope, nothing to setup in Postfix to support SPF on outgoing mail, besides making sure the TXT / SPF record matches the sending server. I tend to simply use "v=spf1 mx -all" since my setup is simple, but you can see the entire syntax here http://www.openspf.org/SPF_Record_Syntax > Thanks, > Rob Cheers
