google translate :
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Periodically not correctly trigger condition is fulfilled when entering data into the element with type zabbix_trapper using utility zabbix_sender. In this case, the delay in the arrival of the data is less than 30 seconds.

original :
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???????????? ?? ????????? ?????????????? ????????? ???????? ??? ??????????? ?????? ? ??????? ? ????? zabbix_trapper c ?????????????? ??????? zabbix_sender. ??? ???? ???????? ? ??????????? ?????? ?????? 30???.