14. Acknowledgments

This document is an update to, and derived from, RFC 4952. This document would have been impossible without the work and contributions acknowledged in it. The present document benefited significantly from discussions in the IETF EAI working group and elsewhere after RFC 4952 was published, especially discussions about the experimental versions of other documents in the internationalized email collection, and from RFC errata on RFC 4952 itself.

Special thanks are due to Ernie Dainow for careful reviews and suggested text in this version and to several IESG members for a careful review and specific suggestions.