it can do auto delete/expire as well as a number of other things that can help you manage your message storage usage across groups of users in you system. There's also two training videos totaling about 36 minutes - time well spent to see what it can do.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.