When using the exposed zabbix_sender service to post information, the server doesn't respond correctly. It should mark the response as a failure but it doesn't. The following examples are for posting to an 'item' of type zabbix_trapper. They are not pretty printed for space reasons.

#1##Missing host in request##You can see that the response is success, although Total is still 0
{"request":"sender data","data":[

{"clock":1345660154,"value":"This should fail","key":"exception_trap"}

]}

{ "response":"success", "info":"Processed 0 Failed 0 Total 0 Seconds spent 0.000156"}

#2##Missing item key in request##Again, response is success but Total is 0
{"request":"sender data","data":[

{"host":"myhost","clock":1345660794,"value":"This should fail"}

]}

{ "response":"success", "info":"Processed 0 Failed 0 Total 0 Seconds spent 0.000011"}

#3##Missing item value##Again, response is success but Total is 0
{"request":"sender data","data":[

{"host":"myhost","clock":1345660939,"key":"exception_trap"}

]}

{ "response":"success", "info":"Processed 0 Failed 0 Total 0 Seconds spent 0.000011"}

#4##Incorrect hostname##Response is still success, although here, it correctly says Failed 1
{"request":"sender data","data":[

{"host":"fqweqwe","clock":1345661381,"value":"This should fail","key":"exception_trap"}

]}

{ "response":"success", "info":"Processed 0 Failed 1 Total 1 Seconds spent 0.000121"}

#5##Incorrect item key##Response is still success, although here, it correctly says Failed 1
{"request":"sender data","data":[

{"host":"myhost","clock":1345661484,"value":"This should fail","key":"asdasd"}

]}

{ "response":"success", "info":"Processed 0 Failed 1 Total 1 Seconds spent 0.000137"}