Gmail mark my emails as spam

Config: OVH + VPS + Debian 8 + Vebmin
URL: adamczaczkowski.pl
IP: 54.37.137.255
rDNS: 255.ip-54-37-137.eu

Im fight with postfix and after all im so close to win…
Gmail mark my emails as spam…only gmail (i hope)…and i dont know why

Here is test for spam score: https://www.mail-tester.com/web-yk7wc
Headers for marked mail: http://pastebin.pl/view/b72fbead

Can someone help me plz… :frowning:

Hi,

If you’d like, we can setup a private consultation to address this matter. The reports provided do point out some relevant and valid points you should be correcting.

consultation will be free or paid?