Google Message Security for Google Apps Administration Guide - Manual (Page 400)

400 Message Security for Google Apps Administration Guide
Used as the location to send notifications as found on each user's user
record.Note: By inserting this address as the “To” recipient, the notification is
sent to a recipient which may not necessarily be the owner of the Message
Center account. In most cases, you should use the Notice Address for the
“To” line-if no “Notice Address” address exists for a user record, this field
defaults to inserting the normal user “Address” (above). The Notice Address is
especially important if another administrator might manage a user's Message
Centers on behalf of the user-for example, in a corporate environment to
enforce user-level settings while also denying account access.
<-isp->
The <-isp-> token is replaced by the value in the “Customer Name” field of the
organization.
<-extra->
If web access is disabled, explains that; otherwise nothing
Early Detection / Pending Quarantine Notification
To view the message:
How the protection works: <-isp->'s email security service
automatically performs additional virus scanning on this message
for <-release_time-> hours for your protection. If a virus is
found, the message is deleted or moved to your Virus quarantine.
Otherwise, the email security service delivers the message to your
inbox as usual.<-isp->