I found an article which clearly describes the usage of Outlook Web Access (OWA) in a mixed environment with Exchange 2000, 2003 and/or 2007.

Article : Technet Article Outlook Web Access and Exchange 2007, Exchange 2003, and Exchange 2000 Coexistence

You receive an error when maximum logging is enabled on MSExchange IS -> Public Folders -> Replication.

Continue reading »

During startup of Exchange the Microsoft Exchange Services do not start. This error can occur if a domain controller or GC (Global Catalog) is not available during startup or has a very slow link. 

Continue reading »

By default, the Security tab is missing in the Exchange System Manager. To display the permissions tab, you have to make a change to the registry.

Here is the correct path to navigate:

HKEY_Current_User\Software\Exchange\ExAdmin.

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

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

Close the Exchange System Manger, then reopen (no need for a reboot).

For more info: http://support.microsoft.com/default.aspx?scid=kb;en-us;264733

Exchange admins will check the queue’s in Exchange System Manager (ESM) on a regular basis. But what if one of these queue’s is filling, do you know where to begin to check? Here are a few tips which will maybey help you find the problem a little bit faster.

Continue reading »