Google Message Security for Google Apps Administration Guide - Manual (Page 279)

Attachment Manager 279
When creating the filter, select a disposition, as follows:
If a message triggers more than one filter, the disposition of the first filter triggered
is performed. For example, if you’re quarantining executables, and you receive an
.exe attachment that is also over the size limit, it will trigger the size filter and
bounce, before reaching the Executables filter and being quarantined.
Disposition Action
Bounce Rejects the messages and returns the sender an error message.
For attachments that exceed the maximum size, the error
returned is “
552 Message too large - psmtp .”
The error message for other filter types defaults to, “ 582 The
file attached violates our email policy. ” but can be
customized on Attachment Manager’s Edit page (see “Configure
Attachment Manager” on page 275).
User
Quarantine Places message in user's Message Center, and labels the
reason for quarantine as Attachment Manager.
Also can place the message in the users’ Quarantine Summary.
Be sure to turn ON the Quarantine Summary notification for your
users if you are concerned that valid attachments may be
quarantined (see “Configuring the Quarantine Summary” on
page 160).
Quarantine
Redirect Sends the message to Attachment Manager’s designated
quarantine. The message is not delivered to the user.
Approve Skips all remaining Attachment Manager filters, allowing a
message with any file type you enter here to bypass Attachment
Manager filters.
Ignore Performs no filtering. Sends the message to the next Attachment
Manager filter, if any.
BCC-
Quarantine (Blind Carbon Copy) Copies the message to Attachment
Manager’s designated quarantine. Also continues processing
the message through remaining filters, delivering it to the
intended recipient if it makes it through the filters.
You can use this disposition to review what types of attachments
users are receiving, without preventing people from receiving
them.