Is there a way to tell the last time an ID was used?

I inherited a Domino 4.6 server with about 600 users and mailboxes, but not all the IDs are being used (cleanup work was never done). Is there a way to know what IDs have not been used in the last three to six months?
Here is an idea: Use Windows Explorer and go into the MAIL subdirectory (where all the users' mail files are stored). Sort the file list by last modified time. See which files have not been touched in a while. If you are not using Windows (and are using AS/400, Linux, etc. instead) use their equivalent command to get a directory file list.

This was first published in June 2003

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