Ben Campbell has entered the following ballot position for
draft-ietf-uta-mta-sts-17: Yes

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COMMENT:
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I'm balloting "Yes" because I want to see this work published. But I have a few
concerns:

§3 seems to leave much of the interpretation of the TXT record as
"implication". It should be explicit. I'd like to see the specific steps the
sender is supposed to follow (perhaps the flow in §5.1 could be expanded to
include the TXT query and interpretation?

For example, the idea that a non-existent record means no MTA-STS support is
sort of buried in the description of multiple text records. Would it be
reasonable to say that the sender SHOULD NOT query for policy if the id hasn't
changed since a previous query?

§3.3:
- "When fetching a new policy or updating a policy, the HTTPS endpoint MUST
present a X.509 certificate which is valid for the "mta-sts" I find this
confusing. Which endpoint is doing the fetching? Which one MUST present the
cert. Are we talking about this in the context of TLS or something else? - Why
is checking for certificate revocation only a MAY? - Does the term "sender"
refer to the SMTP sender, or something else?

§4.1: Why is checking for certificate revocation only a MAY?


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