HTTP to HTTPS redirect not working

I have added this rule to https://www.mydomain.com node but www.mydomain.com is still point to the servers plesk page. 

Any ideas?

<rule name="http to https" stopProcessing="true">
<match url="(.*)" />
<conditions>
<add input="{HTTPS}" pattern="^OFF$" />
</conditions>
<action type="Redirect" url="https://{HTTP_HOST}/{R1}" redirectType="SeeOther" />
</rule>