Tuesday, April 24, 2007

Need full access for all users’ mailboxes in Your SMTP mail organization

Exchange 2003 administrators have explicit denied access to user's mailbox, except their own.

You started a new job, and need full access to user mailbox for some reason,( you don't have to tell me, why) how can this be achieved. Below I will illustrate how an Exchange administrator may achieve this goal. You can permit yourself to see everyone mail box on the entire company easily. Below register hack is for a user profile, so you are just making changes on the account you have logged in.

To display the permissions tab, make this change to the registry.

1. Here is the correct path to navigate:

HKEY_Current_User\Software\ Microsoft\Exchange\ExAdmin.

2. Once you reach the above section of the registry you need to create a DWORD called ShowSecurityPage.

3. A value of 1 (Numeric one) means on, whilst 0 (Zero) means off.

4. Close the Exchange System Manger, and then reopen

There is no reboot required

Now go to ADUC create an account, to be used to look at all users mailbox

Let's say we will create account called "MailMaster"

Now we will go back on top of ESM and add this account there and give full permissions, which will inherit all the way down to your entire mail organization

Great now we have an special account which has full permissions on all mail enabled object, including send as receive as

Go to your OWA now and log on with your user ID and password,


When you log in all you need to do, let's say you want to see, Brad's mail and his NT Id is Brad

After last slash in the address bar with browser add simply brads ID, OWA will ask you

Who you are, and you will be "MailMaster" type the password for this account, OWA will gracefully open up and show you Brad's mailbox


Oz Ozugurlu


JuMz said...

Thank you. This worked! I am just learning the ropes with Exchange, I am a junior admin!

Anonymous said...


James S said...

Many thanks¬!

Anonymous said...

quick, easy and it works...Cheers!

MKB said...

Hi Oz,

Came across your post whilst looking for a solution to the following problem :- The customer has exchange 2003 and currently ALL users have full access to all mailboxes. I've not got my hands on it to take a look yet but wondered if you have an idea how this might have happened and how best to go about undoing the problem. Cheers