We would like to be able to have users on our exchange server (2k3) sending through different SMTP connectors.
email@example.com uses SMTP connector1 for outbound mail
firstname.lastname@example.org uses SMTP connector2 for outbound mail
Basically the issue is that people need to send from both domains but the auth SMTP on the SMTP connector will not authenticate the second domain as different authentication is required by this domain. Both need their own auth settings.