N-central Help

POP service

SolarWinds N-central can monitor a network device for the presence of a POP3 mail server that is available to the network. POP3 is a protocol designed for user-to-mailbox access. It is used on the Internet to retrieve email from a mail server. 

SolarWinds N-central can determine the up or down status of the POP service. The POP service does not use the Warning state. SolarWinds N-central averages the availability of the POP service over the scan interval. It compares the availability of the POP service to the threshold to determine the status.

Service Type TCP
Instances on a Device 1
Device Class Server - Generic, Workstation - Generic, Other, Printer, Scanner/Camera, Switch/Router, Laptop - Windows, Server - Windows, and Workstation - Windows
Monitored By Windows probe, Central server
Scan Interval 5 minutes
Timeout Value The time (in seconds) that the SolarWinds N-central server waits before considering the test a failure. The default is 30 seconds.
Port Number 110
Validation String

The response you expect to receive from the port that is being queried. If the validation string that you specify is not returned by the port being queried, the service will transition to a Failed state.

The default validation string is +OK.

Status details

Status Detail Description
POP Service Availability SolarWinds N-central determines whether the POP service is up or down. The POP service does not use the Warning state. SolarWinds N-central averages the availability of the POP service over the scan interval and compares the availability of the POP service to the threshold to determine the status.
Round Trip Time (ms) The time for a request to be sent and received.
DNS Resolution

The threshold that determines whether the device name can be resolved.

If an FQDN has been specified, the service searches for its IP address. If the IP address is found, the state will be Normal. Otherwise, it will be Failed, based on the default settings.

If an IP address has been specified, the service checks only the IP address's format. If the format is correct, the state will be Normal. Otherwise, it will be Failed, based on the default settings.