I'm using 6to4. How do I configure reverse DNS for my site? It's a Linux server, I'm using freedns.afraid.org and am not running bind.
https://6to4.nro.net/, click '6to4 within 6to4 island', and follow the instructions. They will delegate rDNS of your 6to4 zone to your nameservers (ns1.afraid.org to ns5.afraid.org). From then on, you can use afraid.org's interface to set rDNS.