Security · 3h ago
DMARC's new 'NP' tag clashes with DNSSEC, causing email failures
A newly introduced DMARC 'NP' tag can break email authentication when combined with DNSSEC, due to conflicting DNS handling. The issue arises because DNSSEC-signed zones may reject the tag's required DNS records. Administrators must carefully configure both protocols to avoid delivery problems.
Meridian48 take
This highlights the growing pains of layering security standards without full interoperability testing.
dmarcdnssec