CentOS 5
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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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