Hello, I have an issue when trying to send emails from external email address to internal ones. I can send emails fine from internal email addresses to outside recipients. When I try to telnet from outside in I find a service unavailable.
This machine is a Windows 2008 SBS machine with Exchange 2007. I have done the connectivity test and attached it to this post.
I can telnet port 25 from inside the domain from any client machine to this server.