Manually converting a Mail User to a Remote User Mailbox

The changes that need to be made are: Configure the user attribute targetaddress to contain the remote routing address for the mailbox. This should be in the format user@vanitydomain.mail.onmicrosoft.com.  Set the msExchRemoteRecipientType attribute for the user account to equal 4. Set the msExchRecipientDisplayType attribute for the user account to equal-2147483642. (yes, this is a negative value) Set the msExchRecipientTypeDetails attribute for the user account […]