5. Verifying External Destinations
Questa pagina riassume la sezione corrispondente di RFC 9991 e conserva campi ARF, ABNF, esempio MIME e dettagli privacy/sicurezza.
External destinations for ruf MUST use the verification procedure from RFC 9990 Section 4, substituting ruf where rua appears. This prevents abuse and unwanted privacy exposure for third-party destinations.