Figure 1-1
Symantec Mail Security architecture
Messages proceed through the installation in the following way:
■
The incoming connection arrives at the inbound MTA via TCP/IP.
■
The inbound MTA accepts the connection and moves the message to its inbound
queue.
■
The Filtering Hub accepts a copy of the message for filtering.
■
The Filtering Hub consults the LDAP SyncService directory to expand the
message's distribution list.
■
The Filtering Engine determines each recipient's filtering policies.
■
The message is checked against Blocked/Allowed Senders Lists defined by
administrators.
■
Virus and configurable heuristic filters determine whether the message is
infected.
About Symantec Mail Security
Architecture
14