Our organization has changed from a FirstNameLastInital@Domain.com alias format to FirstName.LastName@domain.com. I would like to create a transport rule to pre-pend the subject line of messages that are addressed to people with the old alias.
The questions is can a transport rule be created (maybe using an expression) to take action if a . (period) is not present in the to: email alias.
Example: Take action if a message is addressed to JohnD@domain.com but not if it is addressed to John.Doe@domain.com?