I tried it, but it didn’t work.
#DISCOURSE_SMTP_ADDRESS: smtp.mailgun.org
#DISCOURSE_SMTP_USER_NAME: forums@xxx.com
#DISCOURSE_SMTP_PASSWORD: xxx
#DISCOURSE_SMTP_PORT: 587
#DISCOURSE_NOTIFICATION_EMAIL: noreply@xxx.com
#DISCOURSE_SMTP_DOMAIN: forums.xxx.com
After commenting out the configuration above, the admin panel displays the following:
I don’t see anywhere that can be filled in automatically.
