The problem is that my RDNS records don't see to work on AOL (and a few other servers).
What can be causing my RDNS records to show up fine on the MXToolBox.com look up and fail the AOL RDNS lookup?
Type IP Address Domain Name TTL
PTR 188.8.131.52 mail.pharmabioserv.com 60 min
DNS Server Response:
I have an open ticket on my ISP but they can't figure out why is this happening, any clue?