Emails not going out
We have a number of workflows in SCSM that handle sending emails to analysts and users for various situations. There have been a number of times lately where those emails just stop going out. I look at the workflow log in SCSM and it shows everything up to date, and succeeded. However I do a message trace in Exchange and past a certain point there is no record of an email going out. I have tried restarting the System Center Data Access service and this has had no affect. The only thing that seems to work is rebooting the whole server stack.
Has anyone ever seen this happen or have any ideas as to what is causing the problem?
The last email that went out was the one at 11:45AM
Message trace from Exchange Online. Time is in UTC, and we are PST, so the message trace lines up with the log above, but only for the first two workflows. None of the rest appear to have made it.