The "ISP" form keeps rejecting this server "arbis.com" which is a NEW server so it doesn't make sense that it's been noted as a spam source unless it's a previous owner of the IP address. But the reply form says it's a dynamic address which is just crazy as the server is in a server farm in St Louis and has a static IP.
Furthermore it's not in any RBL lists that I could find. It's set up with DKIM and SPF and isn't an open relay. It's as clean as can be. I've seen other posts in this forum on this topic and hope a moderator can help me here with an escalation.
Thanks in advance.