Miriam,
Forwards aren't allowed to several domains because of SPAM complaints that can result in our servers getting blacklisted from sending ANY mail to those (and other) domains.
If you add a forward to aol accounts, aim accounts, hotmail accounts, msn accounts, comcast accounts, or yahoo accounts, the forward will be deleted from cpanel.
Forwards to these domains have resulted in numerous complaints from users, and we threaten the ability of all TCH users to send even standard e-mail to these accounts when we allow forwards to these accounts.
It's a pain, I know, but it is better for the community that TCH has taken this action.
Several threads to reference:
http://www.totalchoicehosting.com/forums/i...showtopic=16053
http://www.totalchoicehosting.com/forums/i...showtopic=31202
http://www.totalchoicehosting.com/forums/i...showtopic=29236
http://www.totalchoicehosting.com/forums/i...showtopic=34813