This topic details the metrics for the POP3 service.

  • Availability - A POP3 service is reported to be available if the agent can connect to the POP3 server, and the POP3 server's response is of type "+OK".

  • Connection Metrics

    • All Inbound Connections - Number of inbound connections of all types to the service.

    • All Outbound Connections - Number of outbound connections of all types from the service.

    • Inbound Connections - Number of inbound TCP connections to the service.

    • Outbound Connections - Number of outbound TCP connections from the service.

  • Response Time - The time it took to determine service availability.

  • TCP connection state metrics - The number of connections in each connection state is reported:

    • CLOSE_WAIT

    • CLOSED

    • ESTABLISHED

    • FIN_WAIT_1

    • FIN_WAIT_2

    • LAST_ACK

    • LISTEN

    • SYN_RECEIVED

    • SYN_SEND

    • TIME_WAIT