FTP, POP3 and SMTP dont properly detected

[dataman]

Centos 4.4 x86_64, Php 5.1.6, MySQL 5.0.22, Zabbix 1.3.2

The Pop3, Smtp and FTP services are not detected my the Standalone_t and Unix_t templates.

Standalone_t:FTP server is running ftp
POP3 server is running net.tcp.service[pop]

Strangely, the HTTP is properly detected

The service are running, i can telnet them.

[dataman]

zabbix_get -s localhost -k net.tcp.service[pop]
returns 0

zabbix_get -s localhost -k net.tcp.port[,110]
returns 1

zabbix_get -s localhost -k net.tcp.listen[110]
returns ZBX_NOTSUPPORTED

zabbix_get -s localhost -k net.tcp.service[pop_perf]
ZBX_NOTSUPPORTED

[dataman]

zabbix_get -s localhost -k net.tcp.service[smtp]
zabbix_get [7379]: Timeout while executing operation.

net.tcp.port[, 110] seems to work