Reverse DNS Failure

J Bacher jb at jbacher.com
Sun May 6 00:56:26 UTC 2001



> > Two months ago I changed backbone service providers, consequently all
> > three class C IP adresses had to be changed. I modified all my DNS files
> > accordingly. Since the change, any site that requires a  reverse dns
> > lookup is inaccessible to our users. Also, any mail servers (msn.com +
> > many more) that require reverse dns lookups refuse our mail. When a

> As you did not tell us what ip-addresses adn domain names are involved
> it's impossible to help you. What are you trying to protect ? Your 
> problems ?

Two tasks need to be accomplished:

1)  Ask your ISP to delegate inverse DNS to your nameservers

2)  Setup inverse DNS




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