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Configuring the IIS Web Server for Microsoft Exchange (DCOM Connector)

This topic describes the Internet Information Server (IIS) configuration tasks you must perform on the Microsoft Exchange Server host to enable DCOM Exchange Connector communications with the host.

This task is a step in Process of Configuring the DCOM Exchange Connector.

The URLScan tool protects your Web server by restricting the types of HTTP requests that IIS processes. If you have the UrlScan product installed, make sure that the urlscan.ini file (typically located at C:\WINNT\system32\inetsrv\urlscan\urlscan.ini) is set up to allow the following:

• Make sure that UrlScan allows for the following verbs:
  • PROPPATCH
  • PROPFIND
  • GET
  • DELETE
• Make sure the Web server allows the HTTP request header Translate.
• If Web server logging options are turned on, log files are typically located in C:\WINNT\system32\inetsrv\urlscan\logs. When the Web server rejects a URL because it does not meet the criteria specified in the .ini file, DCOM Exchange Connector log files record the rejected URL. You can use the URL from the DCOM Exchange Connector log file to find entries in the Web server log file that will help you to determine why the URL was rejected. For example, the following error indicates that UrlScan is configured to reject PROPPATCH requests:

  [06-03-2004 - 17:31:36] Client at 172.20.63.233: Sent verb 'PROPPATCH', which is not specifically allowed. Request will be rejected.

  The following error indicates that UrlScan is configured to reject the Translate request header:

  [06-03-2004 - 23:20:45] Client at 172.20.63.221: URL contains disallowed header 'translate:' Request will be rejected. Site Instance='1', Raw URL='/exchange/pimsi2202/Calendar/WzkBF100800142102ibndtst81.eml'

  NOTE:  Note the URL contains the user ID which might be useful for debugging purposes.