In order to use Dynamic DNS with go daddy you must first generate an API key here https://developer.godaddy.com/keys and create a new API key ensuring that you chose production environment in the popup.

After this note the API key and secret.

Then on PFsense go to Services/Dynamic DNS/Dynamic DNS Clients and select add.

• On this page select GoDaddy as the service type
• Select the interface you would like to monitor (most likely WAN)
• Hostname: enter @ (or use a subdomain of your choice you must first create it on the GoDaddy control panel)
• Domain name: enter your domain name
• Username: is your API Key created above
• Password: is your API secret created above
• TTL : 3600 (1 hour is default with GoDaddy)
• Description: Name as you see fit

You should then have something similar to the following

Mail Forwarding

If you use the provided mail forwarding you will have to add the following MX Records in the domains DNS control panel on GoDaddy site

New record

Type MX

• Host: @
• Points to: smtp.secureserver.net
• Priority: 0
• TTL: 1hr

• Host: @
• Points to: mailstore1.secureserver.net
• Priority: 10
• TTL: 1hr