Dec. 29, 2017
2:26 p.m.
Some people on this list appear to think that SMTP servers ought to consider punycode in the domain part as equivalent to utf8, though.
A-labels in domains should work since there's a 1:1 mapping between A-labels and U-labels and there's no question about what they mean. In the local part, that doesn't work because local parts are neither A-labels nor U-labels. Regards, John Levine, johnl@iecc.com, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. https://jl.ly