I'm running a scheduled daily RRD file which generates a PDF report for each staff member and sends it to their email (for about 400 staff). I'm running V1.6.26.
It works fine most of the time, but at least one staff member doesn't get the email occasionally - say 50% of days. This has happened before with another staff member. (It's possible that it's happening with others, but checking them all's a bit tricky.)
There's nothing weird about the email address - internal - or the staff member. I'm confident that the report is valid, ie it returns a non-zero number of records, because run indpendently at the same time it always seems to work.
Any ideas?
Andrew