several users tried to configure Discourse with privateemail without luck including me. you can read more about this problem here “https://meta.discourse.org/t/cant-get-admin-email-to-send-working-with-using-namecheap-email-server/57423”. but after a month of investigations, i finally found the solution.
the main problem was the “from” field
discourse by default use noreply@yourdomain.com for notification emails but privateemail SMTP server needs the mail address of the mailbox you have.
there is no why to solve this issue while installation @codinghorror so after installation you have to re-open containers/app.yml file and make the following adjustments.
SMTP Configurations
DISCOURSE_SMTP_ADDRESS: mail.privateemail.com
DISCOURSE_SMTP_PORT: 587
DISCOURSE_SMTP_USER_NAME: mailBox@yourdomain.com
DISCOURSE_SMTP_PASSWORD: "****************"
#DISCOURSE_SMTP_ENABLE_START_TLS: true # (optional, default true)
1- use port 587
2- use your mailbox address instead of mailBox@yourdomain.com
3- uncomment DISCOURSE_SMTP_ENABLE_START_TLS and set it to true
Notification E-Mails Configurations
At the end of the file you would find
## Any custom commands to run after building
run:
- exec: echo "Beginning of custom commands"
## If you want to set the 'From' email address for your first registration, uncomment and change:
## After getting the first signup email, re-comment the line. It only needs to run once.
#- exec: rails r "SiteSetting.notification_email='mailBox@yourdomain.com'"
- exec: echo "End of custom commands"
1- uncomment - exec: rails r "SiteSetting.notification_email='mailBox@yourdomain.com'"
2- use your mailbox address instead of mailBox@yourdomain.com
now ./launcher rebuild app and have fun 
