blocked by Verizon Online's anti-spam system

My client is on a new IP address for e-mail that is being hosted by colo 5 in jacksonville fl.  E-mail to is being rejected, "451 4.4.0 Target host responded with: "571 Email from is currently blocked by Verizon Online's anti-spam system. The email sender or Email Service Provider may visit and request removal of the block. 170220."  We've submitted the removal request and receivd this response.

"After investigation, Verizon Online Security has determined that e-mail from your IP address will not be allowed access to the Verizon Online e-mail domain due to one or more of the following reasons:

Your IP has been blocked because of spam issues or because your ISP indicates that it is dynamically assigned

Once you have addressed any security-related issues on your network, you should contact Verizon Online Security via this form. At that time, we will work with you to restore normal e-mail traffic or to take other action as we deem appropriate.


Verizon Online Security"


                Your information is incorrect as this range is not dynamically assigned. This is not the case with this address, nor the parent subnet of as a whole. Our network is strictly comprised of statically assigned addresses for purposes of server colocation. You can confirm the GoRack range here We have a proper rDNS and SPF records, there is no SPAMing taking place as this client was just placed on this IP last week. Please double-check your records, perform due-diligence with checking the IP address and range and remove us from your internal anti-spam system.

I have no other option to contact other than posting on the forums.  Your customer service SUX!  Reminds me of the old SLN skit "We don't have to care, we are the phone company."

I need a Verizon rep to contact me so we can resolve these issues as it's affecting more than 1 client of ours that is at the hosted facility.

Thank You!

Re: blocked by Verizon Online's anti-spam system
Moderator Emeritus

Hi msmothers,

Your issue has been escalated to a Verizon agent. Before the agent can begin assisting you, they will need to collect further information from you. Please go to your profile page for the forum and scroll down the page to an area titled "My Support Cases". You can reach your profile page by clicking on your name located above your post, or at the top right of this page.

Under "My Support Cases" you will find a link to the private board where you and the agent may exchange information. The title of your post is the link. This should be checked on a frequent basis, as the agent may be waiting for information from you before they can proceed with any actions. To ensure you know when they have responded to you, you may subscribe to the case. At the top right of your support case there is a gear icon which provides a drop down menu with support case options. Click that and choose "subscribe". Please keep all correspondence regarding your issue in the private support portal.