Reverse DNS & PTR Lookup Issues

We installed the default SMTP and POP3 server on a Windows 2003 R2 server. Our email is not being delivered for some people because of the lack of reverse DNS and PTR's. Our Registrar said it was up to our Frontier Fios bandwidth provider to set up Reverse DNS. But Frontier said we'd have to use their SMTP server if they wanted us to do anything.

Our Registrar at DOMAINMONGER.COM wrote to say:

Quote:
"When the reverse IP is queried, the query goes to the provider, since Frontier Fios owns it. There is no way for the query to go to you or us, since the IP is not delegated to you or us. You cannot do the reverse DNS on your own, it has to be initiated by the IP Provider. Providers like ATT, Sprint, Qwest, etc have a way of doing the reverse for you, as well as delegating the reverse to us. so I assume your provider can as well."

"The reverse DNS is done automatically through the provider of the IP or hosting, as that is where the query goes when a reverse lookup is done. We can provide reverse DNS, but only if you have the provider delegate the IP range to us at ns1.domainmonger.com and ns2.domainmonger.com. If you want to do that, they need to delegate it with a dash (-) and not a slash (/)."
Endquote

Frontier said they can do none of these.

WHO is resonsible, bandwidth provider Frontier, us, or our Registrar? I assume there no way for us to set up reverse dns and ptr records on our mail server on the MS 2003 server?  We're just getting the runaround it seems and wish we knew more about this. I have a good number of pages about this but knowing for sure who is responsible and/or if we can do it on our server prompted us to seek help here.
Grover McBroomAsked:
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Seth SimmonsSr. Systems AdministratorCommented:
Our Registrar said it was up to our Frontier Fios bandwidth provider to set up Reverse DNS.

your registrar is correct; the ISP needs to configure the PTR record since they own the IP block
you can't do it yourself

...because of the lack of reverse DNS and PTR's

a reverse DNS record is a PTR
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Grover McBroomAuthor Commented:
Thanks. Now we have lots more weight to get Frontier moving.
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