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NT Authority\System on Exchange Server 2003

mfumay1 asked
Medium Priority
Last Modified: 2012-05-06
I am managing a server running Microsoft Exchange 2003 and noticed that I have several users with the message that they were last logged on by NT Authority\System.  This is under Exchange System Manager where you can see mailbox sizes.  Most accounts have the username of the person that last logged in.  Why am I getting some that say last logged in by NT Authority\system??
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This is when the system has last logged onto the mailbox, for example it has just delivered an email to the mailbox, or a scheduled virus scan has accessed the mailbox.

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