Google Message Archiving Administration Guide - Manual (Page 55)

Setting Up Message Archiving 57
Non-account
Archiving Select ON to archive messages to and from users
on a particular email server who do not also have
accounts on your message security service.
When you enable non-account archiving, you
immediately begin archiving all journaled messages
without having to first register users with your
message security service. This option can be useful
when the urgency of archiving messages outweighs
the need for granular control of whose messages
are archived. You can enable this option to ensure
that you don't miss any messages, and then go
through the process of registering users.
Once you have registered all the users for whom you
want to archive messages, you can then turn off this
option to avoid storing unnecessary messages in
your archive.
Caution: When you enable non-account archiving,
you run the risk of archiving spam and virus-infected
messages. Messages sent or received by users who
are not registered with your Postini Email Security
system are not filtered by the system. With non-
account archiving, those unfiltered messages are
archived.
Option Value