Question : SMTP Port 25 not working with Exchange 2007 on SBS 2008

I've got pop and IMAP working for remote mail clients, but i can't seem to get the SMTP port working for sending mail. I have no problems connecting thru RWW to client computer and Outlook Web Access, or any of the other functions...

I've tried telnet to connect to port 25 but i just get "Connect failed". It seems to have the proper connectors in exchange management console. Any ideas?

Answer : SMTP Port 25 not working with Exchange 2007 on SBS 2008

Whoa.

Exchange 2007 does not require the SMTP server.  Take that out, it will only make troubleshooting even harder.  For Exchange 2007, the Exchange Hub transport role handles SMTP, it does not require a separately installed SMTP server.

Once you have removed SMTP Server, try sending outbound mail.  If it is not going out, open up the Queue Viewer, and you should find some clues as to what is stopping mail from leaving the Exchange server.  It's most likely a mis-configured Send Connector, if I had to guess.