I have an XG 125 setup to act as my smarthost for my office 365 exchange server. The exchange connectors are configured to send and receive only from my XG. Emails flow normally to most recipients. Some destinations, including Reflexion, bounce my users email for relaying. I have a certificate on my XG that is a wildcard for my domain. I have a dns record for the XG external IP that agrees with the cert. My mx record points at the A-record for my XG. My spf record lists both the outlook.com servers and the A-record for my XG. I am not sure what else I can do to make it known that this is my proper origination point. Any suggestions would be appreciated.
This is what I get from openspf.net...
Mail delivery to following recipients failed:
spf-test@openspf.net - 513 Relaying denied.
This thread was automatically locked due to age.