Failed to send mail with the error message "SMTPUTF8 is required, but was not offered by host"

Solution Unverified - Updated -

Issue

  • Failed to send mail with the error message "SMTPUTF8 is required, but was not offered by host".

Environment

  • Red Hat Enterprise Linux 8
  • postfix-3.3.1-8 or later

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In