My newsletter goes in spam or blocked RAZOR2_CF_RANGE_51_100 -- 3

My newsletter goes mostly in spam folder. When I test with mail-teester.com i have these 2 errors:
I am using mailerlite and also zohocampaigns.
-2.43 RAZOR2_CF_RANGE_51_100 Razor2 gives confidence level above 50% cf: 100
-1.729 RAZOR2_CHECK Listed in Razor2 (http://razor.sf.net/)

I need help to fix this problem.

Thanks for bidding