mod_deflate issue

Hi there

Just ran a compatability check and it turns out that the plugin says that i dont have mod_deflate installed, even though it is active. I get the following resultats:

mod_deflate: Not installed (required for disk enhanced Page Cache and Browser Cache)
mod_env: Not installed (required for disk enhanced Page Cache and Browser Cache)
mod_expires: Installed (required for disk enhanced Page Cache and Browser Cache)
mod_headers: Installed (required for disk enhanced Page Cache and Browser Cache)
mod_mime: Installed (required for disk enhanced Page Cache and Browser Cache)
mod_rewrite: Installed (required for disk enhanced Page Cache and Browser Cache)
mod_setenvif: Not installed (required for disk enhanced Page Cache and Browser Cache)

How come it doesn’t register that gzip (mod_deflate) is active? I’ve got the following in my .htaccess file:

<IfModule mod_deflate.c>
# Compress HTML, CSS, JavaScript, Text, XML and fonts
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
AddOutputFilterByType DEFLATE application/x-font
AddOutputFilterByType DEFLATE application/font-woff2
AddOutputFilterByType DEFLATE application/x-font-opentype
AddOutputFilterByType DEFLATE application/x-font-otf
AddOutputFilterByType DEFLATE application/x-font-truetype
AddOutputFilterByType DEFLATE application/x-font-ttf
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE font/opentype
AddOutputFilterByType DEFLATE font/otf
AddOutputFilterByType DEFLATE font/ttf
AddOutputFilterByType DEFLATE image/svg+xml
AddOutputFilterByType DEFLATE image/x-icon
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/javascript
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/xml

AddType application/font-woff2 .woff2

# Remove browser bugs (only needed for really old browsers)
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
Header append Vary User-Agent
</IfModule>

And furthermore, it says the mod_deflate aswell as the other featuers are required for page cache etc. to Work, so my Question is: dont page cache etc. Work at all, if these are not activated? Because i saw a rather nice reduction in my 1st http request after activating page cache – meaning that it’s working…. or what? 🙂

https://wordpress.org/plugins/w3-total-cache/