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. thanks, patpro
