Viktor Dukhovni and I have been corresponding with the originator of this
erratum, and I believe that this report should be verified. The last sentence
in the notes (about unusable TLSA records) should probably be removed because
it refers to a situation where DANE would not verify successfully.
The following errata report has been submitted for RFC8689,
"SMTP Require TLS Option".
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You may review the report below and at:
https://www.rfc-editor.org/errata/eid7705
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Type: Technical
Reported by: Mechiel Lukkien
Sec