LOG FILES for TroubleShooting (I use WinSCP to read them):
/tmp/zabbix_server.log
/tmp/zabbix_agentd.log
/var/log/daemon.log
/var/log/auth.log
When I had that problem I had to change data in zabbix_server.conf
nano /etc/zabbix/zabbix_server.conf
DBUser=zabbix try postgres or root
DBPassword=password123 # in front = blank password
ListenIP=ServerIP I had to add this at some point as well
/tmp/zabbix_server.log
/tmp/zabbix_agentd.log
/var/log/daemon.log
/var/log/auth.log
When I had that problem I had to change data in zabbix_server.conf
nano /etc/zabbix/zabbix_server.conf
DBUser=zabbix try postgres or root
DBPassword=password123 # in front = blank password
ListenIP=ServerIP I had to add this at some point as well
so will take a while but tnx for the quick reply's 
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