How to audit mailbox permissions

[nogarap]

Hi, I hope somebody can come with a quick way of solving our problem. I've got a couple of E2K3 servers, otherwise my organisation is Exchange 2000 on Win2K server SP4. We applied an MS exchange security update last weekend (kb 931832), and it's made a bit of a mess of our users who have permissions to send from other mailboxes. Previously we'd got away with granting 'full mailbox access' from the 'Exchange Advanced' tab, now we're having to grant perms either through 'Exchange General', ''Send on behalf of', or the security tab 'Send As' attribute.
I guess the security update tightened up some security areas where we hadn't done things quite right.
Now, I don't fancy going through every mailbox to see who has been given permissions on it, so does anybody know a tool, preferably easy to use that will produce a report onmailboxes where other accounts have access?
It will save me a lot of time if anybody can suggest anything.
Thanks in advance.

 

[nogarap]

I found a utility, ADModify.net that will do some of this. I can export Mailbox perms with it. I think it can do a lot more as well, like modify attributes.
It was developed by godotnet.com (

http://www.gotdotnet.com/workspaces/workspace.aspx?id=f5cbbfa9-e46b-4a7a-8ed8-3e44523f32e2),

but has now been taken on my MS(

http://technet.microsoft.com/en-us/library/aa996216.aspx

). I'd recommend it.