ZABBIX - Basic Configuration #22010/05/03

	Turn 'Not Applicable' for monitoring some services because they are not runnging but Enabling by default and their status are detected as failure.
[1]	Some services are failure like follows.

[2]	Click "Config" - "Item". For example, Turn N/A for POP3. Check a box for it and Click 'Disable Selected one" button at the bottom.

[3]	It's OK, the failure status for POP3 dissapers.

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