Office 365 - Give mailbox permissions to another user
Posted by Jane Hughes on 11 February 2020 04:08 PM

Office 365 by default can only send emails from one email account (the account name).  Errors will occur if you try and send using the operator email address etc.

This may be able to be addressed by configuring Mailbox permissions.  Refer to the article below.  This should be carried out by the hardware technician or client.