Qmail custom error patch non-official for FreeBSD qmail-spamcontrol's port version 2624
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Patch (qmail-queue-custom-error.patch) made by Flavio Curti . Allows qmail-queue to exit using custom error-messages, which can be displayed on SMTP connections. See file README.qq-custom-error after patching for details. https://no-way.org/qmail-error/
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For use only with qmail-spamcontrol's port version 2624 (FreeBSD).
Official patch fails when try to apply #1 Hunk on qmail.c after has been patched by qmail-spamcontrol port.