I have a mailbox that 2 additional users want to monitor and send out E.mails as that user.
I have went to the mailbox properties for the monitored mailbox - Exchange Advanced - Mailbox Rights
Gave the 2 users Full Access along with myself. for the other 2 users they get the 'You do not have permission to send on behalf of'
But I do.
The process is that in the From field - I enter the name of the mailbox that I want to send as and the recipient in the To box. Click send. then I get the Send On Behalf Of error.
I am curious why it works for me and not for the other 2 users.
Now - if I give the user delegate access for Send on Behalf of - then it works 0 but the user does not want the recipient to see from User Sent on Behalf of Message in the body of the e.mail