We have migrated domain AA to BB and kept both domains active with a few users/mailboxes being accessed on both.
Condition is to prevent email from domain BB to only a group of users of domain AA - Esp when a users "Reply All" to previous emails when these group of users are marked who should not get these mail.
We tried exchange rule set - sender domain BB to recipients domain AA action drop but no luck as outlook is still delivering email to other outlook users.
Pl. suggest if something on this can be achieved with Mix or solutions.