Given that something like 8.13% of of the hosts that have sent non-spam mail to me do not have reverse DNS information recorded, the fact that AOL have just switched this on as a requirement will be interesting:
(Things I found interesting recently.)
Given that something like 8.13% of of the hosts that have sent non-spam mail to me do not have reverse DNS information recorded, the fact that AOL have just switched this on as a requirement will be interesting: