Ei, eu tentei com as duas opções. Ainda não funciona:
DISCOURSE_SMTP_ADDRESS: REDACTED
DISCOURSE_SMTP_PORT: 25
DISCOURSE_SMTP_USER_NAME: REDACTED
DISCOURSE_SMTP_PASSWORD: REDACTED
DISCOURSE_SMTP_ENABLE_START_TLS: false # (opcional, padrão true)
DISCOURSE_SMTP_OPENSSL_VERIFY_MODE: none
DISCOURSE_SMTP_AUTHENTICATION: "login"
Ainda recebo certificate verify failed (self signed certificate).