Google Message Archiving Microsoft Exchange Journaling Configuration Guide For Exchange Server 2000 and 2003 - Manual (Page 9)

12 Message Archiving - Microsoft Exchange Journaling Configuration Guide
Which Messages Does Microsoft Exchange Server Journal?
Microsoft Exchange Server journals all email messages that users send or
receive, including:
• Messages that users send to others outside your network
• Messages that users receive from others outside your network
• Messages that internal users send to each other
Note:
• For messages sent to internal mailing lists, Exchange Server adds the
expanded list of recipients to the journaled message. However, Exchange
Server cannot expand external mailing lists.
• For messages sent to or received by multiple recipients, Exchange Server
journals only one copy of the message. Message Archiving, then, archives
only one copy.
However, if you are planning a large journaling deployment with multiple
Exchange Servers, multiple copies of some messages may be journaled and
archived. For details, see “Plan Your Journal-Recipient Mailbox Deployment”
on page 14.
• Exchange Server does not support journaling on public folders. Therefore,
Message Archiving cannot archive posts to public folders.