Vincent Pelletier:
> I would rather postfix just stop sending emails altogether in such case,
> than send them from an unexpected ip: a delay is preferable to me to
> uncertainty as to how the emails were processed by recipient SMTPs.
> 
> Is there something else I should set so postfix stops falling back to
> no binding ?

This would require a new setting, for example to make smtp_bind_address
failures a retryable error.

smtp_bind_address_failure_action = warn (or defer)

warn: current behavior
defer: treat as a faiilure to connect

        Wietse

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