Solved: Can’t Receive E-mails But Can Send

I had problems with one of my domains. I was able to send e-mails but was unable to receive any e-mails. Here is what I did to fix this issue.
Attacked: Cloudflare 520/522 Errors on WordPress Login Page

I was getting the Cloudflare 520/522 error when trying to login because my website was the victim of a brute force attack.