Regarding reverse DNS:
Crystaltech is the owner of the block of IP's our dedicated servers are running on. As such, when doing reverse DNS, it is Crystaltech's DNS servers that resolve an IP to a name. This is the reason for the DNS editing tools in the online control panel. Forward-DNS is done on your own dedicated server and its a good idea to create your own reverse DNS entries in case down the road Crystaltech decides they will delegate authority for IP blocks.
Regarding multiple IP's:
Each IP address routes to the same network card on the same machine, so it seems silly to me to lease a block of 8 more IP's. Can someone give me a good case for needing the additional IP's? Domain registrars want a primary and secondary DNS IP, hence the probable reason CT gives us 2 IP's to begin with. IIS on a dedicated server uses host headers when properly configured, so additional IP's are unnecessary IMO.
If you really want to be anal about it, I suppose you could break up the logical functions (FTP/SMTP/POP3/HTTP/etc) into their own IP's, but since they all go to the same computer it just seems goofy to me.
Robert Simpson
Programmer at Large
DEDF14