Hi Phillip, To followup on the IANA issue from your SecDir review: On 08/03/2018 19:39, Phillip Hallam-Baker wrote: > > Specific issues > > The DNS prefix _smtp-tlsrpt is defined. This is not mentioned in the IANA > considerations. It is a code point being defined in a protocol that is outside > the scope of UTA and therefore MUST have an IANA assignment and is a DNS code > point which is shared space and therefore MUST have an assignment. > > If no IANA registry exists, one should be created. After looking at this in more details, I think a new registration in the registry being created by draft-ietf-dnsop-attrleaf is exactly what you are asking for. I think registering _smtp-tlsrpt there should be straightforward. However I don't think this document should be delayed until after draft-ietf-dnsop-attrleaf is done. So if draft-ietf-dnsop-attrleaf is taking time, the proposed registration can be moved to draft-ietf-dnsop-attrleaf itself. > In general, the approach should be consistent with the following: > > [RFC6763] S. Cheshire and M. Krochmal "DNS-Based Service Discovery" RFC 6763 > DOI 10.17487/RFC6763 February 2013 > > It might well be appropriate to create a separate IANA prefix registry > 'report'. That is probably easier since this prefix does not fit well with the > existing ones. > > _smtp-tlsrpt._report I think this is covered by draft-ietf-dnsop-attrleaf. Best Regards, Alexey