Browser caching with nginx not working

Hi there,

i'm using:
Operating System: ‪CentOS 6.7 (Final)‬
Plesk Version: 12.5.30 Update #24

and have the following nginx settings:

Smart static files processing [on]

Serve static files directly by nginx [on]

ac3 avi bmp bz2 cue dat doc docx dts exe flv gz htm html ico img iso mkv mp3 mp4 mpeg mpg ogg pdf png ppt pptx qt rar rm swf tar tgz txt wav xls xlsx zip

Additional nginx directives


if ($scheme !~* ^https ){
rewrite ^...

Browser caching with nginx not working