DNS email problems

[Trekk]

Here is the setup
I had an External DNS named NS1.xxx.com with an IP address of 12.x.x.x. and the domain is registered with Network solutions.
I installed a new Internal DNS named NS2.xxx.com with an IP address of 192.x.x.x ,both are WIndows 2003 DNS
Everything worked fine

We decided to let our ISP host our External DNS so I turned off the External DNS and added our ISP DNS as a forwarder on the Internal 192.x.x.x DNS

Now we can not send email out to some sites like mailin-01.mx.aol.com or FTP to certain sites. I can however do an nslookup on those sites from my Internal 192.x.x.x DNS and they IP address is resolved.

If I turn back on the External 12.x.x.x DNS then everything works fine again. It has been this way for several weeks.

I have Root Hints and the Name Server is the hostname =servername.my companiesdomain.com
We also called IBM since we use Lotus and they said that we have no PTR record for our domain, and if a host has reverse lookups enabled then it will fail to establish connection with our mail server

What am I missing?
Thank you in advance

 

[GlenJohnson]

What kind of error messages are you getting? Event logs? Good luck.

Glen A. Johnson
"Give the laziest man the hardest job and he'll find the easiest way to do it."

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