How to recreate re-create the Outlook Web Access-related virtual directories

Step 1: Delete and then re-create the Outlook Web Access-related virtual directories

To delete the Outlook Web Access-related virtual directories, follow these steps:
Start the Exchange Management Shell.

Type the following commands. Press ENTER after you type each command.

Note: These commands are case-sensitive.

Remove-OwaVirtualDirectory "exchange (default web site)"
Remove-OwaVirtualDirectory "public (default web site)"
Remove-OwaVirtualDirectory "exchweb (default web site)"
Remove-OwaVirtualDirectory "owa (default web site)"

To re-create the Outlook Web Access-related virtual directories, type the following commands at the Exchange Management Shell.

Press ENTER after you type each command:

New-OwaVirtualDirectory "exchange" -OwaVersion Exchange2003or2000 -VirtualDirectoryType Mailboxes -WebSiteName "Default Web Site"

New-OwaVirtualDirectory "public" -OwaVersion Exchange2003or2000 -VirtualDirectoryType PublicFolders -WebSiteName "Default Web Site"

New-OwaVirtualDirectory "exchweb" -OwaVersion Exchange2003or2000 -VirtualDirectoryType Exchweb -WebSiteName "Default Web Site"

New-OwaVirtualDirectory -name "owa" -OwaVersion Exchange2007 -WebSiteName "Default Web Site"

http://support.microsoft.com/kb/941201

Exchange 2000 Server Eseutil Command Line Switches

http://support.microsoft.com/kb/317014

Example: eseutil /?

Uncovering the Exchange 2007 Edge Transport Server (Part 1)

http://www.msexchange.org/articles_tutorials/exchange-server-2007/planning-architecture/uncovering-exchange-2007-edge-transport-server-part1.html

Test-OwaConnectivity

http://technet.microsoft.com/en-us/library/aa997682.aspx

Securing an Exchange 2007 Client Access Server using a 3rd party SAN Certificate

http://www.msexchange.org/articles_tutorials/exchange-server-2007/mobility-client-access/securing-exchange-2007-client-access-server-3rd-party-san-certificate.html

Exchange 2007 lessons learned - generating a certificate with a 3rd party CA

http://msexchangeteam.com/archive/2007/02/19/435472.aspx

Deploying Exchange Server 2003 in a Cluster

http://technet.microsoft.com/en-us/library/bb123612(EXCHG.65).aspx