All your action happens to be on Thursday.
So either your getting new workers and doing account maintenance on Thursdays or there's something else scheduled somewhere? (check your zmschedulebackup -q and crontabs)
I show you going from 52, drop 1 & add 1 on first thurs so back up to 52, then to 53 users.
If those 2 Thursday fulls are recently added accounts then you're fine, assuming their small because they don't have much mail yet. |