Messages to Verizon recipients are being blocked by the anti-spam system. I submitted whitelist requests several times, but just get automated messages in return saying the IP is dynamically assigned. It's not. No spam is going out from the system, and SPF, PTR records are correct. We are not on any of the blacklists (checked with all known RBLs) and have a very good reputation on senderbase.org.
Can someone please help and assign an agent to help us in this matter?
We have many nonprofit organizations and several doctors who can't reach their visitors.
I personally have a Verizon account and all my emails to Verizon are getting blocked when I sent them out using our mail server.
The mail server in question is: {edited for privacy}
Blocked IP address: {edited for privacy}
Any help appreciated.