Ridiculous Exchange database restore scenario

Okay, so I have a little bit of a challenge for the Exchange pros.

I am looking for the mailbox database that a specific user was on... Before their account (and mailbox) was destroyed, around 7 months ago.

I have backups from this time period, however the way the backups are configured is to backup by database, and I can't seem to think of a way to find the database this user was on without guessing which database their data was living on. Anybody have thoughts on how to proceed?

TL;DR - User no longer with company, need to get files from backup but have no idea which mailbox database their files were stored on.

Solution 1:

It sounds like it might be worth it to perform a System State restore of a DC contemporaneous to the Exchange backups, find the user object, and examine the homeMDB attribute. That's going to give you the mailbox database name for sure, but you'll have to deal with putting up a DC "under glass" (don't connect it to your network at all after you perform the system state restore) to get at the data you're looking for.