DNS Configuration

[mtbiker]

I have a NetWare 6 server with GroupWise 6 Doing E-mail. Our Domain www. is hosted on a Co-Located server at our ISP, However our Mail Server GroupWise is located here on-site. The server has TWO NIC's, One public one private. DNS is also serviced on this server for the internal network as well as E-mail.
My Question is our domain name for DNS, should it be the same as our www. domain name? I'm thinking it would have to inorder to route the incoming E-mail properly. But we are also having problems routing to our www. domain from the internal network. I think because of our DNS server having the same domain name as our

http://WWW.server

at our ISP.
IS their someone out their who could give me a hand straightening this all out.

Thank You

 

[ChrisAC]

It doesn't matter what your

http://www domain

name is as long as it resolves to the server at your ISP. The MX record for your domain should point to the external IP address of your mail server.

http://www.yourdomain.com

CNAME co-lo.server.isp.net

yourdomain.com MX 10 mail.yourdomain.com
MX 20 mailspooler.isp.net

mail A <your_server_IP>


Chris.
**********************
Chris Andrew, CCNA, CCSA
chris@iproute.co.uk
**********************

 

[mtbiker]

Yes, the external domain for our E-mail server DOES have a unique name specified to it directly. The MX record does point to the co-lo server.
So it sounds like I have it configured correctly.

My issue that started this quiry is that from time to time when I am at my office, I am unable to attach to our web page at the ISP. Pinging comes up with no resolution. If I switch my connection in my office to another (dial-up) or Proxy, then I can get the connection. This tells me now that I think my resolution problem must be internal to the specific gateway I'm using.

We are using NetWare 6, and I have the DNS/DHCP client configured with the domain name in the Directory, but forwarding to the gateway, secondary to the ISP's DNS server.
Thank You Chris for your help. You helped me out ALOT.

 

[ChrisAC]

Right, so you have two differnt domain names then? One has web and mail going to your ISP and the other has mail directed to your site (your Netware server). Correct?

If you are having problem with resolution the best thing would be to do an nslookup to your gateway and see what that comes up with and then query another name server, say your ISP's and see what that gives. You might have a problem with your gateway.

Chris.
**********************
Chris Andrew, CCNA, CCSA
chris@iproute.co.uk
**********************

 

[mtbiker]

our Domain name is set at the ISP for the Web Site XXX.com. Our Mail Server Name which is just a mail.xxx.com is resident on our mail server which has the Two NIC's. DNS server for the internal network 192.X.X.X has the same Domain Name as the ISP XXX.com
Yup, kind of confusing. Especially for me.

 

[ChrisAC]

Right, it's just that you said &quot;The MX record does point to the co-lo server&quot;.

What you actually mean is that the

http://www record

for xxx.com points at the co-lo web server and the MX record points to your own mail server on your network.

Gotcha!!

Chris.
**********************
Chris Andrew, CCNA, CCSA
chris@iproute.co.uk
**********************

 

[mtbiker]

Yup !

Thank You