IMAP probe is used to make a connection to the IMAP server and then it receives the response from IMAP server and sends the QUIT command to terminate the connection. The connection status is saved in the property imapstatus and the response in the property imaprespmsg.
In our sample, we probe a IMAP server, which typically listens to port 143 (the default port for IMAP). We send an email alert if the IMAP probe cannot connect successfully to the IMAP server.
Because this sample is so close to the previous ones, we do not create a new rule set specifically for email alerting. Please view "Ping Probe" for it. It might be clever to rename the rule set in such a case. For simplicity reasons, we have not done this here.
Therefore, we begin by creating the new service, done by right-clicking "Running Services":
Monitoring IMAP server via a IMAP Probe - Figure 1
Use a name of your choosing, leave the defaults as is and click "Next" and then "finish". We have used the name "IMAP Probe" in our sample.
After doing so, select the newly created service in the tree view to look at its properties. Be sure to bind it to the "IMAP Probe" rule set as seen below:
Monitoring IMAP server via a IMAP Probe - Figure 2
Save the configuration and restart the service. From now on, the following mail alert is generated when the port cannot be connected to:
Event message:
Facility: 16
Priority: 6
Source: 192.168.1.1
Message:
IMAPProbe status="fail" target="192.168.1.1" port="143" netstate="10061" message="Couldn't connect to host"