Log onto the Portal Server administration console as administrator.
Select the Secure Remote Access tab and click the profile name to modify its attributes.
Select the Rewriter tab.
Modify the following attributes:
Attribute Name
Description
Parsers
In the Map Parser to MIME Types field, add the required MIME type in the Edit box. Use a semicolon or comma to separate multiple entries.
Specify the entry in the format HTML=text/html;text/htm
Click Add to add the required entry to the list.