I believe I know why they prevent users from setting up reverse DNS. I think it has something to do with their mail relay. They try to prevent people from sending spam, which is good, but I feel they go about it the wrong way. All mail goes through their relay and there's a limit to how many e-mails you can send a day. It all goes through the secureserver.net stuff.Ah yep, much the same things that upset me about GoDaddy also. Symlink Race protection at the kernel level, impossible on their VPS's which sucks. They let you rename your hostname from ip-XXX-XXX-XX-XX.ip.secureserver.net to your own FQDN but then a reverse lookup points to the secureserver name instead of the custom name you put in.. I really don't know why that wouldn't change to the new hostname I set in their server admin panel but, alas, nothing I can do about it I guess. Thanks for getting back to me...
If you ever move from GoDaddy to some place Linode, if you use cPanel / WHM to backup your installation configuration files, when you restore it on the new server, your mail won't work because of this. You have to go into Exim's configuration and remove the GoDaddy stuff. If you do this on the actual GoDaddy servers, they say you'll get in lots of trouble for trying to bypass their anti-spam stuff.