I set a source override for a monitor in Splunk version 5.0.4
Example: splunk add monitor /var/log/maillog-in -sourcetype postfix_syslog
I would like to be able to see that it was successful via the CLI
'splunk list monitor /var/log/maillog-in' does not provide the details.
There does not appear to be a way to do this via cli yet. However the information can be shown via a REST point.