Today I've checked my SPF is valid on some of the sites and invalid on some of the sites I've tested.
Microsoft also couldn't see my SPF record for some reason while others can. (Sender ID Framework SPF Record Wizard )
I have mail server by my own, no hosting etc. This IP has PTR record pointing to mail.sonet.com.tr
My SFP record is below;
v=spf1 a mx ptr a:mail.****.com.tr ip4:195.***.***.*** mx:mail.*****.com.tr mx:webmail.*****.com.tr include:mail.*****.com.tr ~all
I get a warning from Email Security Grader
Should I be using ptr:mail.*****.com.tr or only ptr is enough?
Also I have 2 domains pointing this mail server,
I have set MX and A correctly with regarding to topics in Serverfault.com. My question is, do I have to set another PTR record for the other domain?