Ubuntu server 12.04/ddclient
From Attie's Wiki
apt-get install ddclient
Control The Server
service ddclient restart
Configuration
Enable the service:
sed -i /etc/default/ddclient -e 's/run_daemon="false"/run_daemon="true"/'
Configure it: /etc/ddclient.conf
daemon=300 mail-failure=ddclient@attie.co.uk ssl=yes use=web, web=http://automation.whatismyip.com/n09230945.asp login=myuser password='mypass' protocol=zoneedit1 server=dynamic.zoneedit.com attie.co.uk