unreachable for 5 minutes (ZABBIX 3)

[miglesiassarria]

Hello,
i am migrating zabbix 2.4 to 3.0 and i am using the official docker container of zabbix 3.0.
whith the version 2.4 i have 0 problems (i was using the docker version too), but now with 3.0 i get in some machines the message (unreachable for 5 minutes). this machines are not unreachable because i am able to connect via ssh.

What is happening?

[jan.garaj]

There is no official Zabbix Docker image - only community version. Be sure, that you have configured your Zabbix properly - Timeout setting, etc.