My Exchange server 2010 install seems to be sending/receiving internally, but when I use a IMAP/POP configuration from an external location, my SMTP server doesn't seem to work.. When I do a Telnet it just says "Connection to host lost".
When I set it up on Outlook it shows the IMAP connects OK, just for SMTP says:
Send test e-mail message: Outlook cannot connect to your outgoing (SMTP) e-mail server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).
Port 25 is open on the router, and it's running on Server 2008 R2 on a Hyper-V.
Also, when I try to add it as a "Microsoft Exchange" account, it can't find it.. I know I probably didn't set this up properly (as it's a fresh install and I'm new at Exchange).
Any help is appreciated.