Not receiving password reset pin for business Fios

Does anyone know if Vz if having issues with this? Also, do you know the exact email address or domain where this would be coming from? I'm trying to login and I have access to the email address its supposed to send the code to, but it never arrives. Other email to that account works. Running a mail trace shows no email hitting our (Exchange online) server. No rules or conditions to block any verizon.com, .net, verizonwireless...etc domains. Not sure what gives.