Some people have no alternatives and we think this is a big scam going on right now
"One way to avoid having your email inadvertently blocked is by registering your domain and IP addresses at EmailReg.org. Emails from domain names and IP addresses that are properly registered on EmailReg.org can be automatically exempted from spam filtering defense layers on Barracuda Spam Firewalls and other anti-spam solutions, preventing your email from being accidentally blocked."https://www.emailreg.org/index.cgi?p=register