On Sep 9, 2013, at 10:52 AM, Paul Wouters <[email protected]> wrote:

> It was brought to my attention by Matthias Wimmer that we overlooked
> an important issue with respect to the base32 generation of the base32
> encoded left hand side of the email address.

"We" did not overlook that: as author, I made that decision completely 
purposefully.

> Mail servers and mail clients do not treat email addresses as
> case-insensitive.

That is sometimes-true statement.

> When encoding an LHS with base32, the case matters.

Yes, exactly. And so does internationalization.

> Using the wrong case will cause you to not find the SMIMEA / OPENPGPKEY
> record.

Yep. And will cause you to sometimes send mail to the wrong recipient.

> We should probably add a section explaining this, and perhaps suggest to
> lowercase before base32'ing the LHS for the lookup.

Yes; no.

--Paul Hoffman
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