How to create multiple OWA instances on a single IIS box

This can be useful if you want to specify different authentication domains for different sets of users in basic authentication settings, thus eliminating the need for the user to enter domain in the credentials popup.  You can also create a default portal page on the default website with links to each of the virtual OWA directories, with meaningful descriptions.

  1. Create a new virtual folders in IIS under the Default Web Site.
     

  2. Point the new virtual folder to a new folder created, using Windows Explorer.
     

  3. Copy the contents of the Exchsrvr\WEBDATA\USA folder into
    the newly created folder.
     

  4. Copy the GLOBAL.ASA and the EXUPLOAD.DLL to the
    same folder.
     

  5. Edit the GLOBAL.ASA file with Notepad and change the line that
    says "bstrVirtRoot               = "/exchange" from exchange to the name of your virtual folder.
     

  6. Edit the following files and change the same line settings.:
    CONSTANT.INC and DEFAULT.HTM 
     

  7. While editting the GLOBAL.ASA page, you will see a line that has "\%langdir%".  Remove the %langdir% only and leave the quotes and slash.

 

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