We have a problem with a new Exchange 2013 server.
A few times a day we got the following message in our event log:Internal aggregate delivery queue length for normal priority messages is more than 3000 over the last 15 minutes. The server has only 20 mailboxes. And when we look at the performance monitor we can't see anything strange.
The Exchange Server itself is operating normaly.
Hope somebody could help us out.
Vincent