IE Warns about Mixed-Mode Content (HTTP and HTTPS) Due to Mod_pagespeed
When visiting some pages, Internet Explorer warns about delivering non-secured content over a secured connection.
A variation of the warning may look like this:
This webpage contains content that will not be delivered using a secure HTTPS
Confluence is running over SSL (HTTPS) and is served by Apache httpd server with mod_pagespeed.
Mod_pagespeed does not support HTTPS entirely. See the improvement request in Google's code repository.
- Install a newer version of mod_pagespeed, as this improvement has been implemented as of Sep 2011.