I am trying to set up my Exchange 2010 server to send emails, but am having no luck. My ISP is Comcast and I have a static IP, business class service. I just got off the phone with Comcast tech support who told me I need to set up a user name and password on the Comcast system to have it allow me to send emails, which I have now done. In Exchange 2003, there is a place to select the port and enter this user name and password in the SMTP connector, but I cannot find this in Exchange 2010.
I did use the Exchange Command Line tool to Set-OutgoingPort to 465 for the send connector I created in the Organization Hub Transport object, but not sure where to set the authorization info or the smtp.comcast.net info.