Re: [DNSOP] Proposal for a new record type: SNI

Robert Edmonds <> Tue, 14 February 2017 20:39 UTC

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Date: Tue, 14 Feb 2017 15:39:24 -0500
From: Robert Edmonds <>
To: Ben Schwartz <>
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Subject: Re: [DNSOP] Proposal for a new record type: SNI
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Hi, Ben:

In your draft, the reason for not using TXT is given as:

2.1.3.  Using TXT

   We could encode this information in a TXT record, but that would
   violate the intended purpose of TXT records: to convey information to
   human readers.

I'm not sure if it's true that TXT records are intended only for human
consumption. TXT RRs contain "descriptive text" where "[t]he semantics
of the text depends on the domain where it is found".

If you define "where the domain is found" as, e.g., domains like, then you get to define the semantics of
what is described by the TXT record at that location. I think DKIM is an
example of a protocol that uses this kind of scheme with TXT records.

Robert Edmonds