The Windows "Primary DNS suffix" is by default used for resolving unqualified domain names.
In the Windows Control Panel, double-click the "System" icon:
In the "System Properties" dialog, select the "Network Identification" tab and click the "Properties" button:
In the "Identification Changes" dialog, click the "More..." button:
Enter the Primary DNS suffix:
Trouble logging in? Simply enter your email address OR username in order to reset your password.
For faster and more reliable delivery, add firstname.lastname@example.org to your trusted senders list in your email software.