I ahve recently migrated my account from a local user across to a network accound on a lion server.
For some reason now messages seems not to be working on my client machine. It runs, I can compose and send messages with no error messsages. however, the messages are not received by the addressee nor does any message history appear in the message window. The addressees are shown as online and imessage is shown as available.
In addition messages are not syncing or appearing from my other ios devices or clients.
The same problem appears on all my clients (Mountain Lion) so it appears to be a setting/user or server issue rather than a client machine issue.
I even get an acknowledgement that a message has been sent at the time (see screen shot below).
Any thoughts gratefully received.
Mac Pro (Mid 2010), Mac OS X (10.7.3), 2 x 2.93 6 Core Intel Xeon 32GB 13