man Qpsmtpd::Constants () - Constants for plugins to use
NAME
Qpsmtpd::Constants - Constants for plugins to use
CONSTANTS
See README.plugins for hook specific information on applicable constants.
Constants available: Return this only from the queue phase to indicate the mail was queued successfully. Returning this from a hook causes a 5xx error (hard failure) to be returned to the connecting client. Returning this from a hook causes a 4xx error (temporary failure - try again later) to be returned to the connecting client. Returning this from a hook implies success, but tells qpsmtpd to go on to the next plugin. Returning this from a hook implies success, but tells qpsmtpd to skip any remaining plugins for this phase.