We have dual Unity Connection 7.0.1 servers running in HA mode without any issues. We have enabled Message Aging Policy and have checked the box "Permanently Delete Messages in the Deleted Items Folder in [ ] days" and put a value of 1 in the box. Basically, any messages that are deleted will go to the Deleted Items folder, and then be deleted after 1 day. On the mailbox we are testing with, we made sure the "Enable Message Aging Policy" option is checked under Edit Mailbox. We have left a test message, deleted it, and it's still in the Deleted Items folder (the message was left on 3/30/09 and deleted right away).
It seems like a straight-forward configuration, but it doesn't seem to be working. Is there something else we're missing? Any feedback would be appreciated.