On 5/27/22 7:51 AM, Stephen Farrell wrote:

- section 3.2: I wondered why no mention of MTA-STS or
   DANE? Could/should we say that MTA implementations
   SHOULD include support for such strictness?

Hi Stephen,

Although these technologies (RFC 8461 and RFC 7672) seem sensible, I don't think we authors have a good handle on whether they are widely deployed enough to justify a SHOULD in a BCP. We will reach out to folks in the email community for guidance.

I also wonder how far this document should go in making recommendations for various application protocols - SIP, IRC, XMPP, NNTP, etc.

Peter

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