During the install I picked this up from the log file You are not authorized to access monit. Either you supplied the wrong credentials (e.g. bad password), or your browser doesn't understand how to supply the credentials required.That error is relevant because when I tried to access the web interface it failed with connection refused! So back to monitrc....this was back to the default file and I had to change it again.
I am wondering if the problem is related to the user and password being set to admin / monit as per the tutorial, 'maybe' setting it to the root user and root password used by omv is the answer.
In my case, I simply accessed the monit Web page and noted the potential for setting parameters. I didn't try to change anything. In any case, you'd think the root user would have access.
So there must be a config file somewhere that will allow you to disable monitoring for the remote mount plugin.
Note - this is speculation:
I'm not sure about disabling Remote Mount (monit) monitoring specifically. Remote Mount is a user friendly interface, in the GUI, for setting up a command line with arguments/switches, that is then placed in another config file where the line is activated on boot. (/etc/mtab is used for mounts but it appears to have entries for local devices only.)
(You're probably right, there might a file "somewhere" where it might be possible to turn something very specific like this off, but the question would be finding the file AND the parameter. I've went down rabbit holes in these searches before, tracing through a trail of what seemed like configuration bread crumbs. One config file references the next, go there, repeat...)
In any case, after the mount takes place a "file system" is mounted. Under System, Notifications, in the Notifications Tab, you could uncheck File Systems and, possibly Process Monitoring and see what happens. It wouldn't hurt anything to test it.