I've saved outbound email settings with:
Using sendmail Path: /usr/sbin/sendmail Arguments: -t -i
When I press "Save and send testing email", I can receive testing email correctly from sendmail.
But When I send email with CiviEmail, both testing and batch sendings, Outbound email settings seems to be ignored.
It had worked correctly CiviCRM 4.6, but suddenly broken after I upgraded CiviCRM to 5.9.1.
I noticed this issue, because I am doing relay_host settings with sendmail. It worked on 4.6, but after I upgraded, it doesn't.
Here is my sendmail setting. It is working, but when I use CiviEmail it seems not to be used.
relayhost = [domain.for.send]:25 smtp_use_tls = yes smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_tls_security_options = noanonymous smtp_sasl_mechanism_filter = login smtp_sasl_type = cyrus smtp_tls_security_level = verify smtp_tls_CApath = /etc/pki/tls/certs/ca-bundle.crt smtp_fallback_relay = [localhost]