Hi Mark, For opendkim, I solved as you indicated Add SenderHeaders List-Post,Sender,From to /etc/opendkim.conf
For Hyperkitty I solved editing my /etc/mailman3/mailman-web.py and append 'charset': 'utf8mb4', DATABASES = { 'default': { # Use 'sqlite3', 'postgresql_psycopg2', 'mysql', 'sqlite3' or 'oracle'. #'ENGINE': 'django.db.backends.sqlite3', #'ENGINE': 'django.db.backends.postgresql_psycopg2', 'ENGINE': 'django.db.backends.mysql', # DB name or path to database file if using sqlite3. 'NAME': 'mailman3web', # The following settings are not used with sqlite3: 'USER': 'mailman3web', 'PASSWORD': 'mypass', # HOST: empty for localhost through domain sockets or '127.0.0.1' for # localhost through TCP. 'HOST': 'localhost', # PORT: set to empty string for default. 'PORT': '', # OPTIONS: Extra parameters to use when connecting to the database. 'OPTIONS': { # Set sql_mode to 'STRICT_TRANS_TABLES' for MySQL. See # https://docs.djangoproject.com/en/1.11/ref/ # databases/#setting-sql-mode 'init_command': "SET sql_mode='STRICT_TRANS_TABLES'", 'charset': 'utf8mb4', }, } }
Thanks Max