2026-10-09 20:58:14
Ever tried to validate the XML of a DMARC rua report?
"DMARC RFC 7489 points to the XML target namespace http://dmarc.org/dmarc-xml/0.1, which happens to contain a rua.xsd file. This is not the XML Schema from RFC 7489, but an older one. [...] the RFC 7489 schema is broken due to an incomplete namespace declaration.
Both schemata use an improper regex for IP addresses, which will trigger validation errors on valid IPv6 addresses.
Bottom line: Both schemata are garbage."
https://wander.science/projects/email/pyrua/