John L

AUTH=PLAIN via plain_login() works with Unicode the regular login() isn't supposed to support anything other than ASCII, gotta use AUTH if you use Unicode

While it is technically possible to add ARC seals without DKIM, it makes no sense. They use the same keys, so any system that can add ARC seals can add...

Sympa should be able to add an ARC seal to the mail that Gmail forwards. It will use whatever DKIM signatures are present, but ARC just records whatever authentication was...

There is no benefit whatsoever to doing ARC while not doing DKIM on a Sympa list. Why provide a useless option?

Um, really, I know the people who wrote ARC. You absolutely want to add a new DKIM signature to show this really came from the Sympa installation rather than some...

In case it's not clear, when Google adds an ARC seal to a forwarded message, it doesn't change the message so any existing DKIM signature will still be valid and...

It is better if the inbound MTA adds the A-R header because it has information that Sympa doesn't, but if the MTA can't add the header, and Sympa adds one...

> > the first step would be implementing idna2008 as a new encoding codec > > This is one possible approach (I think @NCommander was planning to hard-code the equivalent...

Take another look at IDNA2008. That's been the standard for a decade and handles Google.com just fine. UTS46 always maps U+3002 to dot, which breaks IDNA2008 Chinese and Japanese names....

You're right, but ICANN mandates IDNA2008 in all new names. If you tried to register that name with the capital K, no registry would accept it so it hardly matters....