Configuration option "qmgr_message_recipient_limit" should not be smaller than "qmgr_message_active_limit".

Based on the handling logic in src/qmgr/qmgr.c, the value of "qmgr_message_recipient_limit" should not be smaller than "qmgr_message_active_limit" However, this information is not mentioned in the document of "qmgr_message_recipient_limit" and "qmgr_message_active_limit" in http://www.postfix.org/postconf.5.html#qmgr_message_recipient_limit and http://www.postfix.org/postconf.5.html#qmgr_message_active_limit.
It is better to add the necessary information in the document in case of unintended error.