Hi rhaslam,
Do you mean that you want to get a list of shared mailboxes that are in Exchange 2003 coexistence with Exchange 2007?
If so, per my test, you cannot
use “get-mailbox -resultsize Unlimited | ? { $_.recipientTypeDetails -eq "SharedMailbox" }” to get all the shared mailboxes. it can only get the shared mailboxes on Exchange 2007.
If you mean environment with only Exchange 2003 or Exchange 2007, you can use this command to get shared mailboxes in Exchange 2007:
get-mailbox -resultsize Unlimited | ? { $_.recipientTypeDetails -eq "SharedMailbox" }
Thanks,
Evan Liu
TechNet Subscriber Support
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