The PAM 3.X GUI requires that an account be selected under the Credential Manager SMTP Email Server settings, even if SMTP Authentication will not be used. Optionally any account can be selected here as a placeholder, but if no authentication is being used for the SMTP server then a dummy (fake) account is recommended.
Benefits of a dummy account:
- The Mail Server Address will be properly linked to the account which can help avoid configuration mistakes
- Avoid possible Target Account problems in a situation where SMTP Authentication is turned on without re-configuring the placeholder account
- Randomly selected placeholder accounts may be deleted or modified at some point