What we want to achieve in this tutorial: We have a domain name, example.com. We want to define the following records:

• example.com goes to 127.0.0.1 (A record)
• www.example.com goes to 127.0.0.1 (A record)
• *.example.com goes to 127.0.0.2 (catch-all A record)
• example.com has the Google Apps MX records described here. (MX records)
• mail.example.com is a CNAME to ghs.google.com (CNAME record)

I am assuming you already created your account, you logged in, and you are now staring at the New Domain form.

• Add the domain name in the New Domain form. Please don't use the one I used (example.com), as you will not be able to create it as it already exists in the system. Pick another one. Your domain or another random test domain.

• Click the newly added domain to go to the Records Page. You should see an empty records table, and several forms below it.
• Let's add the record for example.com. Write 127.0.0.1 in the edit box labeled content, then click Add record.

• At this point if you have a proper browser you should see the new record in the records table. To test it, please make a direct request to ns1.geoscaling.com for the IP address of example.com. In Linux you can do this with the following command: dig example.com @ns1.geoscaling.com. In Windows you can use nslookup example.com ns1.geoscaling.com in a command prompt (Start → Run → cmd).

• Now let's add the www subdomain: Write www in the “name” text box, and 127.0.0.1 in the “content” box. Click add record.
• Add the catch-all subdomain: * in the “name” box, 127.0.0.2 in the “content” box. Click add.
• To add an MX record, set the type of the record to MX, write the MX in the content section (for example ASPMX.L.GOOGLE.COM.), and set the priority in the priority section, then click Add.
• Finally let's add the CNAME record. Set the type to CNAME, and write ghs.google.com