yup, I have separate certs for mail & web. i'd just mistakenly added the ocsp opts to all. quick fixed the mail cert, removing it; web certs keep it 'on', here.
testssl check of mail cert now confirms: ... Certificate Revocation List -- OCSP URI http://r3.o.lencr.org OCSP stapling not offered OCSP must staple extension -- ... tlsa/dane "3 1 1" usage is noted thx for the 'danectl' script. i've my own key/record mgmt script that deals with my distributed dns, web & mail servers. for LE-certs, DNSSEC, etc -- acme-based. works well enough. especially, as mentioned, with the bind9 integrations for key mgmt. yes, registrars' general lack of support for CDS/CDNSKEY is ... annoying. from mine, i've got years of 'assurances' that "we're working on it. it'll be done in 2-3 months". of course, not so much :-/ still 'someday' for _full_ automation. thx all!