…ed Mail (DKIM) Development, Deployment, and Operations", RFC 5863 , May 2010. [ RFC6377 ] Kucherawy, M., "DomainKeys Identified Mail (DKIM) and Mailing Lists", RFC 6377 , September 2011. Crocker, et al. Standards Track [Page 63] RFC 6376 DKIM Signatures September 2011 Appendix A …