Which takes us straight back to direct MAPI. That's too much of pain to do for free. :-)

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From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of William Lefkovics
Sent: Wednesday, October 25, 2006 7:49 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: Exchange 2003 Mailboxes

Yes, in Exchange 5.5 mailboxes were separate objects with an association to a user account.  You could even have mailboxes without an associated user account.  That is not possible in AD/Exchange2k*.

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From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of cs
Sent: Wednesday, October 25, 2006 3:21 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: Exchange 2003 Mailboxes

I thought I would add at this point that it was possible to view what time a 5.5 mailbox was created (in Exchange Administrator), just need to find out how to find the equivalent timestamp in Ex2k3.

On 10/25/06, Michael B. Smith <michael@xxxxxxxxxxxx> wrote:

I can't find any supported way to do it, other than using direct MAPI calls.

I wouldn't mind being corrected either.

From: exchangelist-bounce@xxxxxxxxxxxxx [mailto: exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of William Lefkovics
Sent: Wednesday, October 25, 2006 5:39 AM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: Exchange 2003 Mailboxes

I don't know how to easily do that; I don't think it is a readily accessible value.  Obviously, the mailbox is an attribute of the user in AD.

But I wouldn't mind being corrected.

I would expect somewhere, maybe with some logging in place at the time, we would have been able to record when a user became mailbox enabled.