How to remove double smtp-banner postfix forwarder on pfsense?

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Postfix forwarder on pfsense for some unknown reason shows smtp-banner 2 times, the first (wrong), and after 5 seconds the second. If you specify manually in the "custom main.cf options" window, then for a short period of time everything is normalized, but then again a double banner. What could be the reason and how to fix it? Thanks