After several days of testing, I have realized that the problem is caused only by the "item test", with test button zabbix add always "?="
If I let Zabbix run without interference, everything works correctly.
The issue on the Proxmox side is due to a misconfiguration on my part.
Thank you all for the help.
If I let Zabbix run without interference, everything works correctly.
The issue on the Proxmox side is due to a misconfiguration on my part.
Thank you all for the help.
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