zabbix-agent-3.0.6-1.el6.x86_64.rpm not signed

[misho]

Hi,

Today i try to update to 3.0.6 on CentOS 6, but RPM is not signed ...
rpm -K zabbix-agent-3.0.6-1.el6.x86_64.rpm
zabbix-agent-3.0.6-1.el6.x86_64.rpm: RSA sha1 ((MD5) PGP) md5 NOT OK (MISSING KEYS: (MD5) PGP#a14fe591)