Setting up Exchange 2003 MX Records

Hi All,
I have recently set up Exchange 2003, and I want to use it as my mail server for my mail domain (mail.kiomega.com.au). My internal domain name is administration.kiomega.wan. I have read various articles on setting up MX records, and as far as I can tell, I have to set up a MX record with my ISP to forward the mail to my internal domain name. I have had a look at doing that but I'm not quite sure what to do.

When I go to set up MX records on my kiomega.com.au control panel page, it asks for me to use a FQDN to forward the mail to. Obviously I cannot use administration.kiomega.wan because that is internal to my network. Am I supposed to register a new external domain name, and point that to my internal network, and then point mail.kiomega.com.au to the new domain name.

I thought that this would all be done in DNS in Windows Server (2003).

Can any one help me?

Thanks,
Michael

 

So if I got my ISP to make an A record with the name of internal domain which points to my WAN IP address, and then point the MX record to the newly created A record?

Thanks

 

Actually, if your ISP host the external domain name space for you, all you need them to do is set the MX record for that domain with an external IP address for your mail server, or an address the server sits behind.

So say your main router's external IP address a 11.11.11.11, you could set the MX record for the external domain, to that IP address. Then port forward the SMTP port (25) to your mail server and job done.

You only need A records set up if you want to host other services such as a web server.

Any decent ISP will help you with setting that up.