ImapMonitor

This monitor checks if an IMAP server is functional. The test initializes an IMAP connection to send a logout command and verify server response.

You can simulate the behavior with telnet:

telnet mail.myserver.de 143
Trying 62.108.41.197...
Connected to mail.myserver.de.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS LOGINDISABLED] Dovecot ready. (1)
ONMSPOLLER LOGOUT (2)
* BYE Logging out (3)
ONMSPOLLER OK Logout completed.
Connection closed by foreign host.

1	Test IMAP server banner, it must start `* OK` to be up.
2	Sending an `ONMSPOLLER LOGOUT`.
3	Test server responds: it must start with `* BYE` to be up.

If one of the steps in the sample above fails, the service is marked down.

Monitor facts

Class Name

org.opennms.netmgt.poller.monitors.ImapMonitor

Configuration and use

Table 1. Optional monitor-specific parameters for the ImapMonitor
Parameter	Description	Default
retry	Number of attempts to get a valid IMAP response.	0
port	The IMAP server port.	143

This monitor implements the Common Configuration Parameters.

Examples

Some example configuration how to configure the monitor in the poller-configuration.xml

<!-- Test IMAP service on port 143 only -->
<service name="IMAP" interval="300000" user-defined="false" status="on">
  <parameter key="retry" value="1"/>
  <parameter key="port" value="143"/>
  <parameter key="timeout" value="3000"/>
</service>

<monitor service="IMAP" class-name="org.opennms.netmgt.poller.monitors.ImapMonitor" />