I have an Exchange organization that hosts email for several different email domains (same ACTIVE DIRECTORY domain) and we need to process external encryption and archiving for the different email domains based on the default email address of the sender.
How can I send email from ONE external domain to encryption / archiving solution (A) and send email from ANOTHER external domain to encryption / archiving solution (B) ?
- Transport rule based on reply-to ?
- Scoped send connector? (I think this would only be applicable based on the domain that I'm SENDING TO, not where I'm SENDING FROM).