I need a script that will remove a specific SMTP address from all of our users mailboxes. The address is firstname.lastname@example.org and was used during a coexistence/migration scenario between GroupWise and Exchange. The username is specific to the person, so something like an if contain "migration.company.com" statement then delete SMTP address. I'm an amateur to PowerShell so would need something cut and paste like.
Thanks in advance!