What email or relay server should I use in my Java code?
Use the following relay server in your Java code:
relay-hosting.secureserver.net
You do not need to provide a user name and password for this relay server.
NOTE: All hosting accounts purchased after 7/11/2011 do not support Java. Existing accounts with Java enabled are not affected by this update — unless you manually disable Java. Once disabled, there you cannot re-enable Java.