I have a Windows 2003 SB Server with Exchange "mydomain.local"
I also have an online hosting server thats hosting "mydomain.com"
I use an SMTP connector to send emails thru my internet hosting server; I have also setup the POP3 Connector to download the emails from the same server on the internet. The SBS 2003 has been configured with a DNS of mydomain.local
and is able to send and receive emails fine from the office to the internet to any domain (Ex. Yahoo, Hotmail, etc...) In my hosting server I've created all the emails of the company employees, but not all those users (email accounts) are created or listed on my SBS 2003 server at the office. This additional emails are used by employees working off-site, they only use email and they have it configured as a POP3 on their computers. They don't have access to our Server at the office. I have the in-office employees that have their own accounts in the SBS 2003 server and are sending emails using the exchange settings in the server. But this in-office employees are not able to send emails to any off-site employee @mydomain.com. The server bounces back the email with the error...
Your message did not reach some or all of the intended recipients.
The Following recipient(s) cannot be reached:
This email account does not exist at the organization this message was sent.