Unable to Telnet to Exchange server on port 25
Posted on 2006-10-25
Our Exchange 2003 server suddenly stopped receiving incomming mails. I cannot telnet to port 25, just get a flashing cursor, as soon as I type anything it disconnects the telnet session. No Mcafee or Symantec virus checkers installed. Restarted server, issue still remains. No ports blocked, telnet internally and externally causes the same issue.