Hello,
From my understanding, you would like to retain a history of last accessed by field in ESM. This is a MAPI property and must be scripted out. There is no easy way to perform a constant recording of whos logged in. The closest is a script written by good friend and Exchange MVP Glen Scales who a great script to script this information out. However, since you’re wanting to record and retain a history, you would have to run these scripts periodically. Another method is to run Exchange Exmon utility which does a constant capture. There is also a limit (512KB I believe) in one capture before starting a new capture. This however, only logs IP addressed of computers that have accessed the mailbox. I hope this helps, if anything is unclear please ask.
Displaying the Logon Status using Data shaping via ADSI and the Exchange_Logon WMI Class in Exchange 2003
http://gsexdev.blogspot.com/2005/06/displaying-logon-status-using-data.html
Exmon Utility
http://www.microsoft.com/downloads/details.aspx?FamilyID=9a49c22e-e0c7-4b7c-acef-729d48af7bc9&DisplayLang=en
James Chong
MCSE | M+, S+, MCTS, Security+
msexchangetips.blogspot.com
ftp://mail.msexchange911.net/
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