But the problem I'm having is that I'm unable to see another person of same custom domain address as online.

We two friends having custom domain address were online on  separate  systems. Both status were online and we were in each other's contact list as well. But in Chat Window, there was a message "No contacts are online".

Do I need to do some server settings, because all other things are working perfect. No junks, receiving and sending mails properly. But chat is not working.

Thanks in Advance :)