ISP Blacklisting

It has come to my attention that the Cloudways (or Digital Ocean) server has been put on a blacklist by at Level 3.
This means all my applications (websites) are affected with email sent from the websites being blocked by some email providers.
If you affected by this please send a complaint to Cloudways and request they fix this problem immediately.
Think about this: We pay them so that we can use the Internet without problems.