Iis – Domain Name hosted by GoDaddy not resolved to IIS website

You will want to add an A-record for your root domain (mydomain.com)

And if you want to get fancy, also add a CNAME (www.mydomain.com) subdomain

There are two steps, and GoDaddy has hard-to-find articles. Reposting text here:

ADD AN A RECORD

An A (host) record connects your domain name to your IP address. A records let users enter your domain name in a Web browser to access your website. They are the most common type of zone record.

Follow the directions to access the DNS Manager.

Click Add Record.

From the Record type list, select A (Host).

Complete the following fields: Host Name — Enter the host name the A record links to. Type @ to point the record directly to your domain name, including the www.

Points to IP Address — Enter the IP address your domain name uses for this host record.

TTL — Select how long the server should cache the information. Click OK, then click Save Zone File. The new A record displays in the A (Host) section.

https://www.godaddy.com/help/add-a-cname-record-19236

ADD A CNAME RECORD

A CNAME (Alias) record points to an A (Host) record. You can create multiple CNAME records and point them to an A record. The most common CNAME records are the subdomains www and ftp.

CNAME records make your DNS data easier to manage. If you change the IP address of an A record, all CNAME records pointed to that A record automatically follow the new IP address. The alternative solution, multiple A records, is not as simple as using CNAME records.

Follow the directions to access the DNS Manager.

Click Add Record.

From the Record type list, select CNAME (Alias).

Complete the following fields: Enter an Alias Name — Enter the subdomain name for the alias assignment. For example, type www. Points to Host Name — Enter the host name you want the alias to point to. For example, type @ to map the alias directly to your domain name.

TTL — Select how long the server should cache the information.

Click OK, then click Save Zone File.

You can click Restore Defaults in the CNAME (Alias) section of the Zone File Editor to restore the default CNAME records for your domain name.

https://www.godaddy.com/help/add-a-cname-record-19236

Hope this helps, if you still haven't figured it out since 2010!

Since you're relying on the domain name rather than IP (which is easier in this situation), here's the most straight forward way of doing this:

• make sure that your outside-facing server has bindings for the 3 sites based on the host header (website1.mydomain.com, etc). You can leave the IP address as (All unassigned). You probably have this done already. -- Basically what I mean is to add a binding to the first site that is "website1.mydomain.com", and to the other two sites in a similar way. Here's a walkthrough on bindings.

• create 2 Web Farms in ARR on the ARR server. One to internalserver and the other to internalserver2. Use the primary IPs of those servers. You can setup 3 different Web Farms if you want unique health checks for each website. It's ok that two of them point to the same server. -- Steps: Create a new Server Farm called InternalServer and add a single server to it, which is "internalserver". Then create another Server Farm called InternalServer2, and add just "internalserver2" to it.

• on the last step of the wizard when creating the site, when it asks if you want ARR to create a rule for you, only say 'yes' the first time. Take note of the rule that it creates so that you can learn from it. Then delete it. You want to manage your own rules. -- I'll explain the rules in the next step.
• you should then set 3 URL Rewrite rules at the global level (IIS Server node, not the website node). URL = .*, use a condition with {HTTP_HOST} for your domain name, and the action should route to the corresponding webfarm. -- Here's an intro to URL rewrite. Follow those steps and enter a rule like the one below:

Example URL Rewrite:

<rule name="site1" patternSyntax="ECMAScript" stopProcessing="true">
  <match url=".*" />
  <conditions logicalGrouping="MatchAll">
    <add input="{HTTP_HOST}" pattern="^website1\.mydomain\.com$" />
  </conditions>
  <action type="Rewrite" url="http://InternalServer1/{R:0}" />
</rule>