iMessage doesn't work

[MomsDenice]

Hello,

I just installed Mountain Lion, and everything it's working correctly except when I try to connect to iMessage.
My username and password are correct.

Thank you

 

[autumnwalker]

FYI there is another thread on this here: http://www.tonymacx86.com/general-help/83263-imessage-wont-work.html