I love the Barracuda anti spam device. I have dealt with them for years and their service and support are second to none.
Recently, I had an issue with a Cuda (it wasn’t broken, I just needed it to play nicely with a not-very-sophisticated Smartermail server) and the engineer showed me something that isn’t advertised much: the Barracuda Expert mode.
This will give you a set of controls that are not available to “normal” admins. In this case, I needed it to allow me to change the Outbound queue time from the default of 48 hours. There are other options there as well that might be of interest.
To get to the Expert Mode, add this to the very end of the url string in the address window:
and hit the Enter key. You will then see the Expert Settings option as seen below.