On 4/15/2016 11:33 AM, Steve Atkins wrote:
As an example, if I go tohttps://www.ietf.org/mailman/listinfo/ietf-smtp and
unsubscribe the email address"STEVE(_at_)wordtothewise(_dot_)com" that'll
remove
the email address"steve(_at_)wordtothesie(_dot_)com" from this list, but if I
try and unsubscribe
"steve-ietf(_at_)wordtothewise(_dot_)com", it won't.
Those three email addresses are all distinct, but they all deliver to the same
mailbox. The mailing list server - which is not the delivery MTA - understands
some sorts of canonicalization, and not others.
In terms of formal Internet mail address specification standards, the
mailing list's equating "STEVE@..." with "steve@..." is a violation. In
terms of long-standing, broad-based, real-world practice, it isn't.
d/
--
Dave Crocker
Brandenburg InternetWorking
bbiw.net
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