4.3.8.4. Error "The recipient was rejected by the server because it does not allow relaying"

If you encounter an error such as "The recipient "admin@example.com" was rejected by the server because it does not allow relaying" when attempting to send messages, check the SMTP connection details in your device's mail account settings and fill them in if they are empty:

• "Hostname" — mail.adm.tools.
• "Username" — mailbox name.
• "Password" — mailbox password.