Hosting a Siebel offline page using IIS URL Rewrite module
For customer facing Siebel applications you need to host the offline page when the application is down and you’re fixing issues or doing recycles. Your customers may get annoyed by seeing the message like “The server you are trying to access is either busy or experiencing difficulties. Please close the Web browser, open a new browser window, and try logging in again. [16:18:44] “to avoid this you need to host an offline page.