Is there a maximum number of alerts/emails that can go out at one time?

Summary:

I have the All Team Overdue Assignments - grouped by manager alert being sent out each week. The alert ran fine until August or September when it started giving errors and stopped working. Of course I can't really understand what the error log is saying, but it appears to be too many records. I'm just wondering if there is some limit we hit.

Content (required):

I already have an SR created for this. Just thought I'd ask if anyone had any thoughts or experience on why an alert would stop working when I didn't change anything.

Version (include the version you are using, if applicable):