local part of e-mail addresses (was: TOFU Design)
ca+gnupg-devel at esmtp.org
Tue Jul 21 03:50:35 CEST 2015
On Mon, Jul 20, 2015, Simon Josefsson wrote:
> "Neal H. Walfield" <neal at walfield.org> writes:
> > In conclusion: I think we should just use the regularized email
> > address
> I agree. Remember that the local part is not case sensitive.
Wrong... the interpretation of the local part is subject to
the rules of the final destination.
RFC 2821 Simple Mail Transfer Protocol April 2001
2.3.10 Mailbox and Address
applications than simple "user names". Consequently, and due to a
long history of problems when intermediate hosts have attempted to
optimize transport by modifying them, the local-part MUST be
interpreted and assigned semantics only by the host specified in the
domain part of the address.
See also the discussions on the DANE lists about looking up e-mail
addresses for PGP and S/MIME keys -- there's always a large
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