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. Also please note the following points: AOL does require that all connecting Mail Transfer Agents have established reverse DNS, regardless of whether it matches the domain. Reverse DNS must be in the form of a fully-qualified domain name - reverse DNSes containing in-addr.arpa are not acceptable, as these are merely placeholders for a valid PTR record. Reverse DNSes consisting only of IP addresses are also not acceptable, as they do not correctly establish the relationship between domain and IP address.