On Tue, Sep 5, 2017, at 12:05, Clem Cole wrote:
On Tue, Sep 5, 2017 at 11:44 AM, Random832
<random832(a)fastmail.com>
wrote:
On Tue, Sep 5, 2017, at 10:46, Clem Cole wrote:
Except as noted, alphabetic strings may be
represented in any combination
of upper and lower case. The only syntactic units which requires
preservation of case information are:
- local-part, except "Postmaster"
So... the username portion.
so the "postmaster" (username) does not preserve case by this rule.
Yes, but, say, "clemc" or "random832" or "tuhs" does (the
endpoint
system might not actually care, but other systems are not free to
capitalize it in the assumption that it won't matter). Postmaster, in
particular, is an exception to the exception.