Appendix A. Technology Considerations

Diese Seite fasst den entsprechenden Abschnitt von RFC 9989 zusammen und bewahrt DMARC-Tags, DNS-Namen, ABNF und IANA-Werte.

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.