Email Troubles - PTR needed?
On-Premises Exchange server. Was using outbound filtering from Intel / McAfee and have now switched services. For other reasons we cannot use the new smarthost so now sending mail directly from Exchange. A few domains (Hotmail / Comcast and possibly others I am so far unaware of) seem to accept the mail but never deliver. Have checked SPF settngs and they seem correct so was wondering if a PTR record would do the trick.
Thanks in advance!