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Questions regarding registering a domain

By maru3445 ·
I have a Windows 2003 AD sever in which the domain was named domainname.local. I would like to add exchange server to this to get email from the outside world. I am confused as to how this might happen for a couple of reason, 1) the domainname.local's corresponding domainname.com is already registered to someone else, so I will have to register a domain name that doesn't match what is in AD and 2)How will exchange get emails from the outside world if it is part of domainname.local as opposed to a .com domain? Any thoughts/ideas would be great.

Thanks
Paul

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by CG IT In reply to Questions regarding regis ...

the DNS MX record for public domain name.com/net/org/info/ etc maps your public IP address to that name. Your firewall will have to allow port 25 [SMTP] traffic through. The internal DNS server MX record says host [machine hosting exchange is ip [private ip address]. In exchange management/connectors/SMTP connector properties/address space is where you put your address space with a metric routing weight. you'll see a connector scope that you specify a routing group or for the entire organization. On the SMTP Connector General properties page you have the choice of using DNS to route to the SMTP virtual Server on exchange.

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by ccthompson In reply to Questions regarding regis ...

I would rename the domain to your desired name in Active Directory, after which: Go to www.register.com and register your domain there. If the name you want is already taken, what about instead of domainname.com, you go with domainname.net, or an abbreviation for your company?

Then install exchange. Make sure you have your "MX" records pointed to your outside IP address and you have your router/firewall setup to allow SMTP(port 25) to pass to the correct server.

Hope this helps!

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by ccthompson In reply to

Also this is a good article:

http://support.microsoft.com/kb/q178009/

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by maru3445 In reply to

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by maru3445 In reply to Questions regarding regis ...

Do I only need to setup the smtp connector because the domain names are different? Why would someone use domain.local as opposed to internal.domain.com?

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by curlergirl In reply to Questions regarding regis ...

Ideally, you would want to change your AD domain name to match your public domain name, but changing your AD domain name, once it has been configured, is impossible without completely wiping out your entire domain and starting over, so you really don't want to do that. Although it is not that common, it is possible to have Exchange use email addresses that do not match your local domain name. The only thing you have to be sure about is that your authoritative DNS server for your domain (wherever that is - probably at your ISP) has both an A (host) and an MX record in your zone that points to the correct IP address and name for your email server. Then, on your router or firewall, you have to set up port forwarding for the SMTP port (port 25) to forward all incoming packets to the correct local server.

In Exchange, you then use the Recipient Policies to configure the default naming convention for the email addresses.

Example: let's say your internal domain name is domainname.local, and your public domain name is company.com; your router IP address is 5.5.5.5 (remember - this is just for arguments sake ;-)); you want your public email server name to be mail.company.com; and your internal Exchange server's name is Exchange.domainname.local with an IP address of 10.0.0.1. Here's how you would do this:

1. On the authoritative server for your domain, create (or have your ISP create) a host (A) record and an MX record for mail.company.com at 5.5.5.5 (your router's public IP).

2. In your Exchange recipient policy, set up the SMTP address to use (mailnickname)@company.com for all of your users.

3. On your router, forward all incoming traffic for port 25 to 10.0.0.1 (the internal address of the Exchange.domainname.local server).

(continued below)

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by curlergirl In reply to

Your internal Exchange.domainname.local server will be listening on port 25 (SMTP) and will recognize incoming email addressed to any of its local email addresses, which are configured to be mailnickname@company.com. Your router is configured to forward all incoming SMTP traffic to 10.0.0.1, which is the Exchange.domainname.local server that is listening for the SMTP traffic. And your ISP is configured to resolve all public email for your email server, which is using a public alias of mail.company.com, to 5.5.5.5.

There's no reason at all that this shouldn't work.

Hope this helps!

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by curlergirl In reply to

BTW, the article referred to by ccthompson is for NT4.0 and will NOT work with Win2K or Win2K3 because of active directory. I have heard that there is a way to rename a domain in AD, but I've not heard of anyone who has done it successfully.

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