Alright, I am running Plesk 7.5.4 on RH9. The server is through GoDaddy. I am managing only 29 domains presently. After reading through EVERY search result I could find on PTR and SPF, I still have some questions as I found different information in each post. Let's deal with PTR first. So, since the NS servers are: ns1.lonetreehosting.com ns2.lonetreehosting.com My understanding is that I should ONLY have PTR records setup for the domain lonetreehosting.com. Is this accurate? This is what I read in several posts. On dnsreport.com, it says: Basically, right now I have PTR on all of my domains based on something I had read before. Should I go back and remove them from all but lonetreehosting.com? Also, I have 3 IP addresses - I use one as the main Plesk IP that only has the first ns1 on it AND my company's website. The 2nd IP has ns2 and half of the remaining domains. The 3rd IP has the other half of the remaining domains. Do I need to pick one domain per IP to have a PTR record? Now for SPF Records So, for SPF records, I presently tried the following in my DNS setup for one of my domains, Look2Find.com:Code:v=spf1 a mx ~allThe above is what I was given as output from the SPF Setup wizard (http://www.openspf.org/wizard.html). Is this correct? It seems to me that it is not correct, and this message in the header from a test message I sent to my GMAIL account seems to confirm my feelings: The above IP in the GMAIL received header is NOT my server IP (any of the three) or my ISP (Comcast Cable) IP. I am not sure where it came from. Does this header response mean the SPF record is not setup properly? Here is what DNS Report says about the SPF record: Any input/feedback is more than appreciated. I am tired of some mail getting blocked by ISPs with SPF and PTR checking setup on them and my clients are fed up with it too. Thanks.