When an OAB is being built by the system the OAB Generation process (OABGen.dll) will create the main share [ExchangeOAB] so the OAB files can be placed for pickup by the FDS (File Distribution Service) which runs on the Client Access Server.

There are two locations for this directory:

1. Exchange 2007 - x:\Program Files\Microsoft\Exchange Server\ExchangeOAB
2. Exchange 2010 - x:\Program Files\Microsoft\Exchange Server\V14\ExchangeOAB

If this folder is deleted, OABGen will check for it and re-create it.

The following permissions are set to this folder:

• Allow SYSTEM Full Control
• Allow Administrators: Full Control
• Allow Exchange Servers:
  • Traverse Folder
  • List Folder
  • Read Attributes
  • Read Extended Attributes
  • Read Permissions
  • CONTAINER_INHERIT (folder and subfolders permissions)
• Allow Exchange Servers:
  • Read Data
  • Read Attributes
  • Read Extended Attributes
  • Read Permissions
  • CONTAINER_INHERIT + OBJECT_INHERIT (folder, subfolders and files permissions)

Dave