Revoke permissions

Question

I have created a shared mailbox in onprem and migrated to online. i have given SendonBehalf permission from exchange online powershell using the below syntax.

Set-Mailbox -Identity "smailbox@mydomain.com" -GrantSendOnBehalfTo "myuser@mydomain.com"

How do i revoke this permission, will the below syntax work.

Remove-MailboxPermission -Identity smailbox@mydomain.com -User myuser@mydomain.com -AccessRights SendOnBehalfTo 

Answer 1

Hello @Rising Flight

-AccessRights should not support the value "SendOnBehalfTo".

But you could try setting "-GrantSendOnBehalfTo" to NULL.

Set-Mailbox -Identity "smailbox@mydomain.com" -GrantSendOnBehalfTo $null

Kind Regards

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Answer 2

The syntax you provided is almost correct, but the cmdlet you should use is Remove-MailboxPermission instead of Remove-MailboxPermission. Here's the right syntax:

Remove-MailboxPermission -Identity "smailbox@mydomain.com" -User "myuser@mydomain.com" -AccessRights SendOnBehalfTo

This command will remove the "Send on Behalf" permission for the specified user from the shared mailbox. Ensure you run this command in the Exchange Online PowerShell environment.