Google Message Security for Google Apps Administration Guide - Manual (Page 325)

Reports 325
Traffic Reports
Traffic Reports give you visibility into traffic sources and destinations for
messages that are quarantined or forwarded to the recipient. Mail that is bounced
or blackholed is not recorded in the reports. By clicking links embedded within the
report data, you can see granular data regarding which IP addresses are sending
messages to specific users.
Traffic by Domain (Inbound)
This report shows inbound mail traffic information for the domains in the selected
organization.
Two types of inbound Traffic by Domain reports are available. One report
aggregates all messages for sub-domains and aliased domains to the primary
domain. A second type of report -- the Traffic by Domain (& sub-domains)
report -- includes all sub-domains and domain aliases exactly as they were
received without any mapping to a primary domain. The fields in these two reports
are identical, and each report has the same total emails processed.
Content Manager Total bytes of messages filtered by Content
Manager.
Other Filters Total bytes of messages blocked by other filters,
such as SPF, DKIM, IP Lock, and TLS.
Total Messages Total bytes of messages processed for this domain.
Field Description
Field Description
Domain Domain to which messages were sent.
Messages Total number of messages passed through the
message service.
Bytes Total size of messages in bytes.