Telnet to Exchange 2013 not working

Hello,

we have 1 Exchange 2010 server (active production) and 1 Exchange 2013 (new production) in coexistance.

When i Telnet to the Ex2010 server is works fine. When i telnet toe the EX2013 server i get a black Command prompt. When i start typing it gets back to C:\>

i changed the receive connector from all unassigned to the static IP. still no connection possible

I see the Ex2013 is listening on port 25. when i execute the telnet listening changed to Time_wait.

There is no antivirus software installed. WIndows Firewall is on. When i turn it off, still no connection possible.

What can i do?