Hi HN, I built this tool to quickly diagnose email deliverability issues caused by DNSBL/RBL listings. It checks a single IP, CIDR, or a small range (up to 256 IPs) and shows exactly which lists flagged the IPs, plus practical guidance on what to fix before delisting. I’d love feedback.
Hi HN, I built this tool to quickly diagnose email deliverability issues caused by DNSBL/RBL listings. It checks a single IP, CIDR, or a small range (up to 256 IPs) and shows exactly which lists flagged the IPs, plus practical guidance on what to fix before delisting. I’d love feedback.