Return e-mail alias if it exactly matches the provided e-mail address when searching OAB

Supported on: At least Windows Server 2008 R2 or Windows 7

Registry

HKCU software\policies\microsoft\exchange\exchange provider

Value name: oab exact alias match

Enabled: oab exact alias match = 1

Disabled: oab exact alias match = 0

Description

By default, when searching the Offline Address Book, Outlook resolves e-mail addresses using Ambiguous Name Resolution. With Ambiguous Name Resolution, Outlook suggests additional possible matches (if they exist) even if there is a name that matches exactly the e-mail alias entered. By enabling this setting, you can change the behavior so that Outlook returns a single e-mail address if it exactly matches an e-mail alias.