You manually add another mailbox account, and the Exchange Server 2010 Service Pack 1 (SP1) Auto Mapping feature adds it at the same time.You add both the manager and delegate mailbox accounts in the same Outlook profile.This article describes two distinct scenarios in which this feature can cause unexpected behavior: However, you know the credentials to access the additional Exchange mailbox. You do not have Full Access permission to the Exchange mailbox.You have Full Access permission to the additional Exchange mailbox.You can add an additional Exchange account if one of the following conditions is true:
Microsoft Outlook 2010, Outlook 2013, Outlook 2016, Outlook 2019 and Outlook for Office 365 let you add multiple Microsoft Exchange accounts to the same profile. Issues that can occur when you add multiple Exchange accounts in the same Outlook profile
