Issue:
Outlook shows warning that a calendar invitation cannot be sent on behalf of another mailbox
Or
Outlook shows warning that a calendar invitation cannot be sent on behalf of another mailbox
Or
#550 5.7.1 RESOLVER.RST.NotAuthorized; not authorized ## - Calendar Invite undelivered when sent on behalf of
another/secondary/shared mailbox
Resolution:
The mailbox from which the calendar invite has to be sent
must be primary always.
Option 1: Configure the shared
/alternate/secondary mailbox as primary account in outlook profile
Option 2: Access
Shared/secondary/alternate mailbox calendar from Outlook Web Access
(OWA)/Webmail and send the invite.
