Exclude Resource Mailboxes from Address Lists and Dynamic Distribution Groups

In Exchange 2010 when you generate an address list or dynamic distribution group containing Users with Exchange mailboxes this includes room and equipment mailboxes. If you want to exclude resource mailboxes, you'll need to use PowerShell to set the recipient filter.

Here is a command that creates an address list for users with Exchange mailboxes, which includes resource mailboxes:

New-AddressList "MailboxUsers" -RecipientFilter {(RecipientType -eq 'UserMailbox')}

Here is a command that creates an address list for user with Exchange mailboxes, but excludes resource mailboxes:

New-AddressList "MailboxUsersNoRooms" -RecipientFilter {(RecipientType –eq ‘UserMailbox’) –and (-not(ResourceMetaData –like ‘ResourceType:*’))}

There is an oPath filterable property named IsResource however, I couldn't use that for address lists because there is no LDAP equivalent and the cmdlet errored out.