Verizon is blocking email from Zoho. When will this issue be resolved?

----- The following addresses had fatal errors ----- 
[Status: Error, Address: < sutman1@verizon.net >, ResponseCode 421, , Email from 74.201.84.155 is currently blocked by Verizon Online's anti-spam system. The email sender or Email Service Provider may visit  http://www.verizon.net/whitelist  and request removal of the block. 150422] 

Message will be retried for 4 more day(s) 

----- Transcript of session follows ----- 

Received:from mail.zoho.com by mx.zohomail.com 
    with SMTP id 14296657900381014.1859264910383; Tue, 21 Apr 2015 18:23:10 -0700 (PDT) 
Message-ID:<14cdeb8b824.10d5 3d19f21076.9088827083305780870@seiki.com > 
Date:Tue, 21 Apr 2015 18:23:09 -0700 
From:Seiki Customer Service < customerservice@seiki.com > 
User-Agent:Zoho Mail 
To:< sutman1@verizon.net > 
Subject:Re: [##115076##] Seiki 
Content-Type:multipart/alternative; 
    boundary="----=_Part_24759_1952215510.1429665789988"