Domain name isues, mail server name not resolving

[Regalrip]

Hiya,
I have found a few posts on this subject and just need to take it one step further.
Our internal domain name that is the same as my external hosting name and server. joeblogs.com
I resolved the problem of not able to browse our website internally by adding the correct DNS entries, in the DNS server, that points to the ip of the external server.
We only have one server internally thus a Split DNS would not work as recommended in a few previous posts.
My problem is, our e-mail is also hosted by our External server, thus is at mail.joeblogs.com
Now if the primary DNS points to our internal DNS server, the mail client receives an error finding the entry.
Were we can access the webmail from

http://www.joeblogs.com/webmail/

but not through the mail.joeblogs.com
If it’s on Auto DNS it works fine, but then the network takes ages to find a path on our local server.
Any help would me much appreciated.

 

[ChrisAC]

I'm not sure what your problem actually is? What is the domain in question? Are you authoratative for that domain?

"We only have one server internally thus a Split DNS would not work "

You only need one server to do split DNS?

"Now if the primary DNS points to our internal DNS server, the mail client receives an error finding the entry"

Why not just set the internal hosts up to send mail to your internal mail server on it's IP address?

Without knowing the domain name we can't see what your problem actually is? Your description is very vague!

Chris.

**********************
Chris A.C, CCNA, CCSA
**********************

 

[Regalrip]

Hiya.

I found the info at the following website.
Myself: - "We only have one server internally thus a Split DNS would not work "

http://www.isaserver.org/tutorials/You_Need_to_Create_a_Split_DNS.html

Chris: - "Why not just set the internal hosts up to send mail to your internal mail server on its IP address?"

Our Mail is hosted externally on the same server as our website, and don't have a mail server internal. We just have one file server, on our LAN.

Thus my problem is, while on a workstation, if the Preferred DNS server address is assigned to our LAN dns server, I can't access the external mail server that hosts our mail, as it’s the same domain name, but I can access our website. Our website and mail server is the same. If I am outside of your LAN I can access mail.samedomain.com, but internally I can't access it. If I change the Preferred DNS server address to auto. It works fine, but then the network is extremely slow.

What entry can I make in our internal DNS server so that if the Preferred DNS points to our internal server that I can still access mail.samedomain.com, as currently its not finding it.
Thanx

 

[Regalrip]

Now Worries, mate.
I managed to sort out the problem.
Thanx for your help Chris.

 

[ChrisAC]

You must have two DNS servers in order for the split DNS infrastructure to work. You can't create the same zone twice on the same DNS server.

Ah, well this is an issue with Windows DNS servers if this is the case. With BIND you can just create two zones and set up 'views'.

So, is your internal DNS server authoratative for your external domain?

You might be just better hard coding the IP address of the server into the mail clients for sending outbound mail. Still, I don't understand why you are able to resolve 'www' but not 'mail'? This doesn't make much sense to me.

Chris.

**********************
Chris A.C, CCNA, CCSA
**********************

 

[GlenJohnson]

Now Worries, mate.
I managed to sort out the problem.
Thanx for your help Chris.

Share the wealth. What was the solution?

Glen A. Johnson
"Trust time, for it tends to provide sweet ways out when facing bitter difficulties"
Miguel de Cervantes Saavedra (1547-1616), Spanish writer
Tek-Tips in Chicago IL

 

[ChrisAC]

Yes, tell us!

Chris.

**********************
Chris A.C, CCNA, CCSA
**********************