DuzMarc

DuzMarc is a Dutch tool for monitoring DMARC. It accepts the aggregate reports that mailbox providers send about a domain and evaluates them. Live dashboards show which servers and services send on behalf of the domain and how their messages fare in SPF, DKIM and DMARC checks. Alerts point to new or suspicious senders, IP addresses are enriched with network and organisation data, and a map shows where mail using the sender domain originates. Team members receive access according to their role, secured by a second login step, and changes are written to an audit log.