Re: [cobalt-users] Reverse Lookup

["Gerald Waugh" <gerald@xxxxxxxxx>]

"shimi" <shimi@xxxxxxxxxxxxxxxx> wrote sometime ago

> Reverse resolves doesn't interfere nor help in existance/non existance.
> The only reason you would want reverse resolves are that when YOUR server
> initiates a connection to ANOTHER server, the other server will know who
> you are, instead of seeing the IP address. Also when you connect to other
> servers, if there is a resolve, it won't wait for a timeout.
> So basically except if you're relaying mail, you don't need reverse DNS
> set. (again, not that if you won't do DNS it'll fuck something up. it'll
> just be alittle slower, not a big deal)
 
An old thread, but important! If you are going to do something, do it right!
Please set up your nameserver such that reverse lookups work.
go to http://www.his.com/cgi-bin/nslookup and type in your IP addresses,
hit return and view the results. If you get an error FIX_IT!

It has come to my attention that many ISP's on the internet are taking 
reverse lookups a little more seriously. There is a movement towards 
doing reverse lookups on everything and on email in particular, 
many ISP's will deny access if reverse lookup fails. So, besides being a 
good Internet citizen, reverse lookups that fail may very well f**k up your
clients, then it does become a big deal!
Gerald