we have exchange 2003 in our company, and have all our users set up on our internal network, RFC1918 IP address, non-routable domain - "ourcompany.internal" for example.
we also have an externally hosted domain "ourcompany.com" for example, where we send and receive mail to the outside world.
We can send email/meetings/etc both to and from users on our internal domain "email@example.com
" and can even email/meetingrequests to the outside world, though any respondses fail since "ourcompany.internal" is not a valid FQDN.
We can also, from within the network, access the remote "ourcompany.com" server and send/receive email via SMTP/POP3.
Is there a way to configure the exchange server to deliver exchange "@ourcompany.internal" email internally (as it currently does) but if the destination user is not internal, to use the "@ourcompany.com" email address for delivery so people can respond.
We do have everyone's outlook set to default to their "@ourcompany.com" account, but when they are selecting/scheduling users via calendar/appointments, it selects and sends from/to their exchange "@ourcompany.internal" email address, when we would prefer everything to be routed through the "@ourcompany.com" accounts so it reaches people remotely and can be responded to - especially if it includes people not on our domain.
This is similar to the question 21061241 to some extent;