On Thu, 18 Jun 2020 10:20:48 +0200, Patrick Proniewski stated: >On 17 juin 2020, at 22:05, Viktor Dukhovni ><postfix-us...@dukhovni.org> wrote: >> >> On Wed, Jun 17, 2020 at 10:00:32PM +0200, Patrick Proniewski wrote: >> >>>> - disable SMTPUTF8 in Postfix. >>> >>> That means disabling it everywhere and let messages bounce on MX >>> servers. Would not really change anything in the end. >> >> Yes, but it is the right thing to do. Better than generating >> backscatter. When you don't have (end-to-end) SMTPUTF8 support for a >> non-trivial fraction of your inbound traffic, DO NOT advertise >> support for SMTPUTF8, or dedicate separate inbound MX hosts for the >> domains that need and do fully support SMTPUTF8. > > >I'll do that until we can upgrade Exchange to a version that supports >SMTPUTF8.
That would be " Microsoft Exchange Server 2019" https://docs.microsoft.com/en-us/Exchange/new-features/new-features?view=exchserver-2019 -- Jerry
