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The Postfix documentation reads

By default, Postfix sets the "SMTPUTF8 requested" flag only on address verification probes and on Postfix sendmail submissions that contain UTF-8 in the sender address, UTF-8 in a recipient address, or UTF-8 in a message header value.

Then it states

However, if you have a non-ASCII myorigin or mydomain setting, or if you have a configuration that introduces UTF-8 addresses with virtual aliases, canonical mappings, or BCC mappings, then you may have to apply SMTPUTF8 autodetection to all email

Does that mean with user-configurable aliases via MySQL that can have UTF8 characters, I should set smtputf8_autodetect_classes = all?

  • What you have in `mydomain` and `myorigin`? – Esa Jokinen Jun 26 '17 at 16:03
  • ASCII-only, but what got me wondering was the `or if you have a configuration that introduces UTF-8 addresses with virtual aliases` part. –  Jun 26 '17 at 19:46

0 Answers0