If you have a situation like me where you use DDNS and are trying to find a good auto-updater tool, check out "dDNS Broker" on the Mac App Store. It's highly rated and super easy to install and get working. I spent many hours trying to get the unsupported tool for namecheap to correctly update the dynamic IP. Using this dDNS Broker ($3.99), I was done entering/configuring all my DDNS sites in about 2 minutes.
You can decide if you want the utility to auto-load at system start up.