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Windows 2008 R2 Reverse Lookup Zone

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    Hi guys,

    Recently I changed my internet provider and had to move to a VDSL connection and I started having dns issues.
    My network is like this now:
    VDSL ModemRouter from internet provider which has the external ip, lets say, The router has NAT on – 255.
    Then I have my internal router that has the ip and which also has NAT on network – 255.
    The DNS and mail server is on
    I routed the ports for DNS, mail, etc on both routers to point to
    The forward lookup zone works ok, i have defined the mx record on and also on and have A records for mail, www, ns, ns1, ns2 with the external ip, The FQDN record has all the ips:, and
    The reverse dns lookup zone is defined on the external ip and is like 92.91.90 – …. Ihave defined a PTR record for with the external IP but it still when I check from the exterior it doesn’t recognize the reverse lookup.
    Can you please help?

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