Appendix A. Technology Considerations

Questa pagina riassume la sezione corrispondente di RFC 9989 e conserva tag DMARC, nomi DNS, ABNF e valori IANA.

Appendix A discusses S/MIME, method exclusion, the Sender header field, domain existence tests, Organizational Domain discovery issues, and removal of the historic pct tag. These considerations explain technology choices and changes from earlier DMARC practice.