Let's say I had these two addresses, which are the same except that one
has a U-label and the other has the equivalent A-label. They're both
non-ASCII addresses since the mailbox name is in Chinese
Presumably if you're sending mail to those addresses, you should send them
to the same place. But on the final delivery MTA, is that one address or
two? Different mail software implement it differently.
Looking at RFCs 6530 and 6531 I get the impression the authors assumed
they'd be the same but I don't see anywhere it explicitly says so.
John Levine, johnl(_at_)taugh(_dot_)com, Taughannock Networks, Trumansburg NY
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