Google Message Security for Google Apps Administration Guide - Manual (Page 67)

Users and Quarantines 67
Create a Default User
To apply different user settings across an organization—say, to give the Sales org
more lenient spam filtering than other orgs—create a new Default User, customize
its filter levels, and assign it to the org.
Creating a Default User. The Sales org is assigned a new Default User with low
filter levels. All other orgs continue using the original Default User, and get
Moderate filter levels.
Message Center Access Enable this setting
regardless of whether you want new users to
access their Message Center. Disable Message
Center access using the org-level User Access
settings.
Individual permissions Leave these check
boxes unchanged. Set all permissions at the org-
level, instead.
See “About the Message Center” on page 133.
Notification Address: Enter an address here
only if you intend for a single administrator to
receive notifications for users in orgs using this
Default User (not typical).
Redirecting to a notification address affects all
notifications. This includes spam and virus
notifications, welcome notifications, and password
changes.
Otherwise, leave this field blank. See
“ Quarantine Summary & Notifications” on
page 149.
Default User Recommended Settings