zabbix_sender cannot send: Allowed server is [localhost]

[axterics]

$ /usr/bin/zabbix_sender -z 10.131.244.3 -p 8080 -s myhost  -k mykey -o 1 -vv
zabbix_sender [18254]: DEBUG: Answer [{
	"response":"success",
	"info":"Processed 0 Failed 1 Total 1 Seconds spent 0.000477"}]
Info from server: "Processed 0 Failed 1 Total 1 Seconds spent 0.000477"
sent: 1; skipped: 0; total: 1

$ zabbix_sender -V
Zabbix Sender v1.8.3 (revision 13928) (16 August 2010)
Compilation time: Aug 27 2010 06:44:09

In zabbix_server.log

 18397:20101015:174314.721 Process data failed: Connection from [10.131.244.2] rejected. Allowed server is [localhost]

$ zabbix_server -V
Zabbix Server v1.8.3 (revision 13928) (16 August 2010)
Compilation time: Oct 4 2010 12:53:03

zabbix_server.conf trapper segment

ListenPort=8080

# Source IP address for outgoing connections
#SourceIP=

# Listen interface for trapper. Trapper will listen on all network interfaces
# if this parameter is missing.

#ListenIP=

What is wrong?
ListenIP is unset so the trapper should reiceve zabbix_sender from everywhere...

[richlv]

check item mykey - what do you have in "allowed hosts" field ?

[axterics]

Solved.
Thanks a lot richlv
I search only in configuration file. I use zabbix from 1.4 and i read the 1.8 changelog too fast.
I suggest to insert this note also in the zabbix_sender man page on wiki because the verbose output of zabbix_sender doesn't help.

Something like: "the type must be 'Zabbix Trapper' and the host must be insert in the allowed hosts field comma separated"

[richlv]

that information has now been added to sender manpage and its copy in the manual