Configure SMTP for outbound emails
NOTE: We are in the process of modifying the file structure and configuration for many Bitnami stacks. On account of these changes, the file paths stated in this guide may change depending on whether your Bitnami stack uses native Linux system packages (Approach A), or if it is a self-contained installation (Approach B). To identify your Bitnami installation type and what approach to follow, run the command below:
$ test ! -f "/opt/bitnami/common/bin/openssl" && echo "Approach A: Using system packages." || echo "Approach B: Self-contained installation."
The output of the command indicates which approach (A or B) is used by the installation, and will allow you to identify the paths, configuration and commands to use in this guide. Refer to the FAQ for more information on these changes.
To configure SMTP settings using an external SMTP server, you have to add the lines indicated below to the Discourse discourse.conf configuration file.
Depending on your installation type, the Discourse discourse.conf configuration file can be found in the following locations:
Approach A (Bitnami installations using system packages): /opt/bitnami/discourse/config/discourse.conf
Approach B (Self-contained Bitnami installations): /opt/bitnami/apps/discourse/htdocs/config/discourse.conf
smtp_address = "SMTP_HOSTNAME" smtp_port = SMTP_PORT smtp_domain = example.com smtp_user_name = 'SMTP_USER' smtp_password = 'SMTP_PASSWORD' smtp_enable_start_tls = true
Restart the servers:
$ sudo /opt/bitnami/ctlscript.sh restart
SMTP configuration for Gmail
Warning: If you use Discourse extensively, we recommend to use your own SMTP server for sending emails. The current Gmail sending limit is 500 emails per 24 hours.
An example for Gmail is as follows. Replace USERNAME and PASSWORD with your Gmail account username and password respectively.
smtp_address = "smtp.gmail.com" smtp_port = 587 smtp_domain = example.com smtp_user_name = 'USERNAME@gmail.com' smtp_password = 'PASSWORD' smtp_enable_start_tls = true smtp_authentication = login
To configure the application to use the SMTP service provided by Amazon Simple Email Service (SES), refer to the guide on using Amazon SES.
NOTE: Amazon EC2 blocks SMTP port 25 by default on all Amazon EC2 instances, and you must manually request removal of this restriction to use this port.
To configure the application to use other third-party SMTP services for outgoing email, such as SendGrid, refer to the FAQ.
NOTE: If you are using Gmail as the outbound email server, your application’s attempts to send outgoing emails may be blocked by Gmail if it considers the authentication attempts to be suspicious. When this happens, you will receive a Gmail security alert at the corresponding Gmail address. To proceed, you will need to manually confirm the validity of the authentication attempt before Gmail will permit the application to send outbound emails. For more information on this and other Gmail issues related to outbound email from your application, refer to our Gmail SMTP troubleshooting page.