Google Message Archiving Administration Guide - Manual (Page 29)

30 Message Archiving Administration Guide
Message Capture for Journal Archiving
When you configure your email server for journaling, your server records a copy
of, or journals, all inbound, outbound, and intradomain messages for the users
you specify, and stores those messages in a special mailbox on your email server
or a separate journaling email server. The server then automatically forwards the
messages to your archive. The following figure shows an overview of how
Message Archiving captures email messages for journal archiving.
As Message Archiving receives journaled messages from your email server, it
checks their sender and recipient addresses. It then indexes and archives only
those messages (including attachments) that were either sent or received by
users who have accounts in an organization for which you turned on archiving. If a
user does not have an account on your message security service, Message
Archiving does not archive journaled messages for that user.
User Accounts and Journal Archiving
When you turn on archiving for an organization, Message Archiving immediately
begins to archive journaled email messages for existing users in that organization.
If you add users to an archiving-enabled organization using batch commands,
Directory Sync or Web Autocreate, or directly through the Administration Console,
Message Archiving starts to archive their messages as well. With Automatic
Account Creation, though, provisional users’ journaled messages are not archived
until your message security service promotes those users to registered users.
Blackholed or Bounced Messages
If the message security service blackholes (deletes) or bounces back (returns) to
the sender any incoming messages, your email server does not journal them.
Therefore, these messages are not archived.