all this back-n-forth on list re: DNSSEC/DANE has resulted in a flurry of interest among colleagues etc. and i've been getting emails. lots.
for the what/why i've been tossing them Viktor's now just slightly dusty preso Real World DANE Inter-domain email transport https://static.ptbl.co/static/attachments/169319/1520904692.pdf for the how, my own brief deploy notes are not particularly useful in current form. Any favorites/recommendations for current "what/why" & "how to" DNSSEC/DANE with Postfix docs/tutorials/posts/etc? Particularly for completely-new-to-DNSSEC/DANE, but mostly self-sufficient with Postfix otherwise, admins?
