Sending

zabbix_sender -vv -z ZABBIXSERVERIP -s ZABBIXHOSTNAME -k KEYNAME -o 0

on my zabbix server to check something on a proxy fails:

zabbix_sender [32324]: DEBUG: Answer [

{ "response":"success", "info":"Processed 0 Failed 1 Total 1 Seconds spent 0.000257"}

]
Info from server: "Processed 0 Failed 1 Total 1 Seconds spent 0.000257"
sent: 1; skipped: 0; total: 1

When I send that on the proxy itself, it works. It seems as if there is a restriction since 1.8.4 that doesn't allow me to send anything via zabbix_sender, that is not on the host itself