Add domain to whitelist

[jw111111]

I need to open a case for a whitelisting of our domain.  Our organization is getting blocked with error:

451 4.4.0 Primary Target IP address responded with "571 Email from (ipaddress) is currently blocked by Verizon Online's anti spam system."

Tried to use the auto whitelist form but it cam back as denied because of a "dynamic ip address" which is 100% false. 

What's the best way to talk to a human? 

[jw111111]

Also,  judging by this forum, you might consider taking a good look at your current anti-spam system.