Setting Up a Forwarding Address for a Microsoft Exchange® 2019 Account
It is not possible to set up a forwarding address if your domain is assigned to a Microsoft Exchange 2019 contract. To set up a forwarding address, you must transfer the domain to another contract in the same account.
The following article explains how to set up email forwarding:
Setting Up a Forwarding Address
To learn how to automatically forward messages that are sent to your Microsoft Exchange 2019 mailbox to another email account by using inbox rules, see the following article:
How to Forward and Redirect Email Messages by Setting Up Inbox Rules