Error reference
mail_not_configured
Mail is not configured
SummaryHTTP 503
The verification email cannot be sent right now — the mail service is temporarily unavailable.
Why this happens
- SMTP parameters are not set on the server (admin technical setting).
What to do
- Try again in a few minutes. If it persists — contact support.
- For admins: set SMTP_HOST, SMTP_PORT, EMAIL_FROM and if needed SMTP_USER, SMTP_PASS.