I'm trying to setup Treo 650 working with Exchange 2003 Sp2. I've setup an Exchange ActiveSync account in Versa mail but when I check settings I got this message :success accessed server, but incorrect version.

And when sync (with GPRS) to receive e-mails I got this :

there was a problem syncing messages. (Net 1214) There was a problem connecting to server.
check your network or server settings and try again.

Does anyone know about this? It could be certificate problem, how can I disable certificate checking? With Pocket PCs 2003 it's working fine.