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In W&B Server, adding users to the instance or a team triggers an email invitation. By default, W&B sends these invitations through a third-party mail server. If your organization restricts outbound traffic from the corporate network, these invitations might not reach the end user. To work around this, administrators of a self-managed W&B Server can route invitation emails through an internal SMTP server. To configure W&B Server to use your internal SMTP server, complete the following steps:
  1. Set the GORILLA_EMAIL_SINK environment variable in the Docker container or the Kubernetes deployment to smtp://[USER:PASSWORD]@smtp.host.com:[PORT].
    • USER and PASSWORD are optional.
    • If you’re using an SMTP server that’s designed to be unauthenticated, set the value for the environment variable like GORILLA_EMAIL_SINK=smtp://smtp.host.com:[PORT].
    • Commonly used port numbers for SMTP are 587, 465, and 25. The port might differ based on the type of mail server you’re using.
  2. Optional: To configure the default sender email address for SMTP, which is initially set to noreply@wandb.com, set the GORILLA_EMAIL_FROM_ADDRESS environment variable on the server to your desired sender email address.
After you set these environment variables, W&B Server routes new user and team invitation emails through your internal SMTP server using the sender address you specified.