Why DMARC’s New ‘NP’ Tag Can Fail When DNSSEC Is Enabled

A blog post explains that DMARC's new NP tag may fail when DNSSEC is enabled. The NP tag is intended to indicate non‑policy messages. DNSSEC signatures can interfere with the tag's processing. This interaction can cause the NP tag to be ignored or misinterpreted. The article provides examples of the failure scenario. Administrators are advised to test configurations carefully. Monitoring for delivery issues is recommended. Workarounds are suggested until the incompatibility is resolved.