Outlook 2007 add other user's mailbox as additional mailbox logging

Does anyone know if it is logged by default somewhere when someone adds an additional mailbox to their mailbox? If it is enabled by default either in exchange server or outlook, where is the log? And if it's not on by default, how can you enable that?
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

look for event id Event ID: 1016
This is logged it when ever a user opens as mailbox which is not his primary logon account
caloricAuthor Commented:
Exchange_Geek: I'm looking for just mailbox events specifically, and for exchange 2007.

anupnellip: I tested that and checked the logs on both the client and server and can't find any events by that ID.
Big Business Goals? Which KPIs Will Help You

The most successful MSPs rely on metrics – known as key performance indicators (KPIs) – for making informed decisions that help their businesses thrive, rather than just survive. This eBook provides an overview of the most important KPIs used by top MSPs.

caloricAuthor Commented:
Both are kind of what I'm looking for, although I have exchange 2007. anupnellip, I never found that log code in either the server or client logs though.
It hasn't changed much in Exchange 2007 either.

Scroll down in your registry to

HKLM - System - Current Control Set - Services - MSExchangeIS - Diagnostic - Private -
Access Control

Double Click on each and make the value as "7" (That is the highest value possible)

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.