Hi tm0 & Eddy,
This is also a problem:
WARNING: Found mail servers with inconsistent reverse DNS entries. You should fix them if you are using those servers to send email.
Server IP PTR (Reverse) IPs
-type2diabetestreatment.net. 148.163.92.69 -we.love.servers.at.ioflood.com. 96.45.82.184, 96.45.83.17, 96.45.83.217, 96.45.82.85
All mail servers should have a reverse DNS (PTR) entry for each IP address (RFC 1912). Missing reverse DNS entries will make many mail servers to reject your e-mails or mark them as SPAM.
All IP’s reverse DNS entries should resolve back to IP address (IP → PTR → IP). Many mail servers are configured to reject e-mails from IPs with inconsistent reverse DNS configuration.
Then we a B-status here: https://sritest.io/#report/6a9a460a-3e51-4edb-aec2-addc59be4dda
polonus