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According to my configuration Postfix should be replying with a permanent error code (554), but it keeps sending a temporary one (454). Why is it doing that?

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According to my configuration Postfix should be replying with a permanent error code (554), but it keeps sending a temporary one (454). Why is it doing that?

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You probably have soft_bounce = yes. Also, if there is a temporary DNS problem, Postfix automatically converts permanent errors to temporary ones.

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