Obtaining Reverse DNS Records from Your Uplink?

aralin asks: "Recently I was trying to set up my own server at home. I've got a domain and set everything, but I've come to one problem. When I want to give my server some reasonable name, I hit into DNS record mismatch. In other words, my DNS records do not match the reverse IP records set by my provider and thus some nodes reject to communicate with different services of my machine. Now I hit a wall when I tried to ask AT&T Cable to set reverse DNS records for my IP to something reasonable. And thus I would like to ask: What are you experiences with different broadband providers and obtaining reverse IP records for your own domain names?"

Comments

You don't have to make them match

[rcw-work]

All dns verification systems such as tcp wrappers and ssh will work as long as the reverse dns hostname for your ip address resolves to the same ip.

For example, take a random cable modem user (if you have the itch to portscan someone, PLEASE pick your own completely random ips), 24.5.2.24. This address reverses to cx54499-b.dt1.sdca.home.com, which in turn resolves to 24.5.2.24.

That machine may host example.com and example.net... You'll still be able to ssh to example.com and example.net, send mail to them, or do whatever, even though 24.5.2.24 does not reverse to example.com or example.net.

Just another example of SpeakEasy on top

[bconway]

I've repeatedly advocated SpeakEasy.net as a DSL company that are on top of things and cater to those who know what they want out of a DSL service. They offer up to 4 static IPs on a residential connection, block no ports, encourage running servers, and have a request to set reverse DNS lookups on their tech support email page. I think that about says it all. =)