Running Get-PublicFolder on our Exchange server (2007) produced a bunch of errors related to invalid characters (spaces) in the aliases of a number of mail enabled PFs. A bunch of the PFs were Default PFs and should never have been mail enabled to begin with so I disabled them for mail from the EMC. Unfortunately, even though the PFs are no longer mail enabled it appears as if the aliases don't get deleted and Get-PublicFolder still produces errors about the same bad characters in the same PFs. What is the easiest way to clean out all those aliases? I'm thinking there must be some way to issue an EMS cmdlet that updates the PF address list and removes all the old aliases. Is that possible or should I just delete the entire PF address list, rebuild it with New-AddressList, then use EMC to apply it? Weird bit is that some of the these PFs that have bad aliases are System PFs that probably came over from Exchange 2003. Is it safe to mail disable these System PFs as well? More generally, are there any System PFs that must remain mail enabled?