I am the administrator of an Exchange 2003 SP2 server. We have a security policy in place that specifies that we disable the user accounts for resource mailboxes (conference rooms, shared mailboxes, etc.). I have also seen this listed as a best practice in several forums. We want to set up a mailbox management recipient policy to remove older messages and calendar entries in these mailboxes after a period of time. However, I have found that the Mailbox Management process skips disabled accounts when it runs. Is anyone aware of a way to keep these accounts disabled, but force the Mailbox Management process to run against these mailboxes?

Check the SELF permission on these mailboxes and ensure that it has the associated external account

The SELF permission is listed on these accounts. Not sure what else to look for here.