There were a few annoying e-mails from fail2ban and monit that I went in and fixed. I was surprised when I rebooted and I received the same e-mails. At first I thought I hadn't done the fix properly, but after examining the change and the e-mails it appears that I'm receiving the *same* e-mails that were previously sent. The exact same e-mails that were sent pre-changes with the exact same time-stamp were being sent again. In gmail the e-mails that I receive are timestamped 10 hours ago when the original was sent. Every reboot it dredges it up and sends it again.
Edit: This is also happening when I disable / re-enable 'Notification' through the OMV GUI.