All of our Unix based pro-series accounts now come with a control panel feature that controls email box creation, email forwarding, email alias creation and password maintenance. The control panel automatically alters the .domains file that resides in your account, so if you use the control panel you should leave the .domains file alone and of course never delete it.For documentation on your control panel refer to these pages:
PRO ACCOUNTS: created before 10/2001 | created after 2001(I you are not sure try to access http://yourdomainname.com:911. If it produces a page not found or error screen you have the newer version of the control panel).