following
./launcher destroy mail-receiver
then following the instructions here
Delivering mail sent to discourse.DOMAINNAME.com to Discourse
Starting OpenDKIM...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "en_US.UTF-8",
LC_ALL = "en_US.UTF-8",
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
Adding user `postfix' to group `opendkim' ...
<86>Jul 17 16:00:00 usermod[17]: add 'postfix' to group 'opendkim'<86>Jul 17 16:00:00 usermod[17]: add 'postfix' to shadow group 'opendkim'Done.
Starting OpenDMARC...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "en_US.UTF-8",
LC_ALL = "en_US.UTF-8",
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
<22>Jul 17 16:00:00 opendkim[25]: OpenDKIM Filter v2.11.0 starting (args: -x /etc/opendkim.conf)Adding user `postfix' to group `opendmarc' ...
<86>Jul 17 16:00:00 usermod[32]: add 'postfix' to group 'opendmarc'<86>Jul 17 16:00:00 usermod[32]: add 'postfix' to shadow group 'opendmarc'Done.
<22>Jul 17 16:00:00 opendmarc[40]: OpenDMARC Filter v1.4.2 starting (args: -c /etc/opendmarc.conf)<22>Jul 17 16:00:00 opendmarc[40]: additional trusted authentication services: (none)postfix: Postfix is using backwards-compatible default settings
Jul 17 16:00:00 ubuntu-mail-receiver postfix[52]: Postfix is using backwards-compatible default settings
postfix: See http://www.postfix.org/COMPATIBILITY_README.html for details
Jul 17 16:00:00 ubuntu-mail-receiver postfix[52]: See http://www.postfix.org/COMPATIBILITY_README.html for details
postfix: To disable backwards compatibility use "postconf compatibility_level=3.6" and "postfix reload"
Jul 17 16:00:00 ubuntu-mail-receiver postfix[52]: To disable backwards compatibility use "postconf compatibility_level=3.6" and "postfix reload"
Starting Postfix
Jul 17 16:00:00 ubuntu-mail-receiver postfix/master[1]: daemon started -- version 3.7.11, configuration /etc/postfix
Jul 17 16:00:28 ubuntu-mail-receiver postfix/smtpd[123]: connect from mail-ukwestazon11021090.outbound.protection.outlook.com[52.101.100.90]
Jul 17 16:00:28 ubuntu-mail-receiver postfix/smtpd[123]: NOQUEUE: reject: RCPT from mail-ukwestazon11021090.outbound.protection.outlook.com[52.101.100.90]: 554 5.7.1 <person@discourse.DOMAINNAME.com>: Recipient address rejected: Mail to this address is not accepted. Check the address and try to send again?; from=<ethan@DOMAINNAME.com> to=<person@discourse.DOMAINNAME.com> proto=ESMTP helo=<CWXP265CU009.outbound.protection.outlook.com>
Jul 17 16:00:28 ubuntu-mail-receiver postfix/smtpd[123]: using backwards-compatible default setting smtpd_relay_before_recipient_restrictions=no to reject recipient "person@discourse.DOMAINNAME.com" from client "mail-ukwestazon11021090.outbound.protection.outlook.com[52.101.100.90]"
Jul 17 16:00:28 ubuntu-mail-receiver postfix/smtpd[123]: disconnect from mail-ukwestazon11021090.outbound.protection.outlook.com[52.101.100.90] ehlo=1 mail=1 rcpt=0/1 quit=1 commands=3/4