Is there is a way to know who sent the message, when messages are sent by changing the From field in Outlook to a different user?
Remove Team Calendars from Outlook's Navigation Pane
How to remove the Team Calendar group from Outlook's Calendar Navigation pane, which is added by an Exchange server mailbox.
What's New in Exchange 2013
What's new in Microsoft Exchange Server 2013, including public mailboxes, site mailboxes, and new OWA features.
Removing shared mailboxes from an Outlook profile
How to remove shared Exchange mailboxes from an Outlook profile after removing Full Access permissions on the mailbox. Or, give a mailbox user Full Access permission to a mailbox and disable automapping, so the mailbox does not show up in the folder list automatically. .
Using Windows 8 Apps with Exchange Server
How to use Windows 8 Calendar, Contacts, and Mail apps with Exchange server mailboxes. Hotmail and Gmail accounts also supported.
Exchange 2010 Roll-ups and hotfixes
Hotfixes, updates, roll-ups, and service packs for Microsoft Exchange Server 2010.
Allow or block file types in OWA
Using a mailbox policy to prevent users from opening certain file types using OWA.
Using a Large Exchange Mailbox on a Small Drive
How to configure Outlook to sync only recent messages when you have a large Exchange mailbox and a small hard drive common on ultra-portable laptops and Windows tablets.
Create a shared mailbox in Exchange or Office 365
Create a shared mailbox in Office 365, for addresses shared among users, such as for Sales, Info, or Billing. Assign Send As permissions to users and they can send mail or reply to messages using that address. The mailbox will be added to user's profile automatically, thanks to auto-mapping.
How to Remove the Primary Account from Outlook
Solution for "The primary account cannot be removed unless it is the only account in the profile. You must remove all other Exchange accounts before removing the primary account." error message.