In the Block Response Header fields, select Manual and type the server host name into the first field and type the header name into the second field, then click Add.
For example, if you set the host name to “
webmail.xyz.com” and the header name to “X-OWA-version,” headers with the name “X-OWA-version” from host “
webmail.xyz.com” is blocked. In general, listed headers are not sent to the client if an HTTP/HTTPS bookmark or off-loaded application is used to access a listed Web server.
To block a certain header from all hosts, set the host name to an asterisk (*). You can add up to 64 host/header pairs. In the HTTP protocol, response headers are not case-sensitive.