I have several domains, each with an MX record like this:
So, for domain1 it will be:
AOL's RDNS tool says:
I have a PTR record pointing back to my own domain (id-8.com) for that IP address, but I don't have a seperate ptr for each domain pointing to the same IP...Failure! Unfortunately we were unable to resolve Reverse DNS for the IP address you entered. Contact your ISP or e-mail administrator to modify these settings.
Sooo... Do I need to get a seperate PTR for each domain, or do I need to change the MX record of all my domains to mx.id-8.com?