■
Content Compliance filters scan the message for restricted attachment types,
regular exessions, or keywords as defined in configurable dictionaries.
■
Spam filters compare message elements with current filters published by
Symantec Security Response to determine whether the message is spam. At
this point, the message may also be checked against end-user defined Language
settings.
■
The Transformation Engine performs actions per recipient based on filtering
results and configurable Group Policies.
Firewall rules
The following table shows the necessary firewall rules for Symnatec Mail Security.
These assignments may differ slightly depending on your environment and
filtering types (inbound, outbound, or both).
Table 1-2
Firewall rules for Symantec Mail Security
Description
To
From
Protocol
Port
Inbound internet mail traffic
Symantec Mail
Security
Internet
TCP
25
Inbound internal mail traffic
Internal mail
servers
Symantec Mail
Security
TCP
25
Outbound internal mail traffic
Symantec Mail
Security
Internal mail
servers
TCP
25
Outbound internet mail traffic
Internet mail
hosts
Symantec Mail
Security
TCP
25
Rapid response antivirus updates
Internet
Symantec Mail
Security
TCP
21
Default automatic antivirus updates
Internet
Symantec Mail
Security
TCP
80
Rule updates and license registration
Internet
Symantec Mail
Security
TCP
443
LDAP server access to synchronize
users/groups/d-lists
LDAP servers
Symantec Mail
Security
TCP
389
LDAP server access to synchronize
users/groups/d-lists (Global Catalog
Access)
LDAP servers
Symantec Mail
Security
TCP
3268
15
About Symantec Mail Security
Firewall rules