We have a scheduled report that's been running daily, for several years; it's set up to include the report file in the email. Recently, the file attachment stopped getting included in the email notification.
The file attachment had grown to 1MB in size. I thought this might be the problem, so I decreased the date range in the report. The next few report notifications that were sent included the file attachment. After a few days, the notifications started going out without the file attachment again.
I built a new scheduled report. For a few days, the notifications went out with the file attachment. Then same as before, the notifications got sent out without the file attachment.
Does anyone have ideas about what might be causing the problem?