Cisco Cisco Email Security Appliance C190 Guida Utente
Chapter 6 Email Security Manager
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Cisco IronPort AsyncOS 7.5 for Email Configuration Guide
OL-25136-01
Note that the default policy will always be shown when you search for any user,
because, by definition, if a sender or recipient does not match any other
configured policies, it will always match the default policy.
because, by definition, if a sender or recipient does not match any other
configured policies, it will always match the default policy.
Email Security Manager: Managed Exceptions
Using the steps shown in the two examples above, you can begin to create and
configure policies on a managed exception basis. In other words, after evaluating
your organization’s needs you can configure policies so that the majority of
messages will be handled by the default policy. You can then create additional
“exception” policies for specific users or user groups, managing the differing
policies as needed. In this manner, message splintering will be minimized and you
are less likely to impact system performance from the processing of each splinter
message in the work queue.
configure policies on a managed exception basis. In other words, after evaluating
your organization’s needs you can configure policies so that the majority of
messages will be handled by the default policy. You can then create additional
“exception” policies for specific users or user groups, managing the differing
policies as needed. In this manner, message splintering will be minimized and you
are less likely to impact system performance from the processing of each splinter
message in the work queue.
You can define policies based on your organizations’ or users’ tolerance for spam,
viruses, and policy enforcement.
viruses, and policy enforcement.
outlines several example
policies. “Aggressive” policies are designed to minimize the amount of spam and
viruses that reach end-users mailboxes. “Conservative” policies are tailored to
avoid false positives and prevent users from missing messages, regardless of
policies.
viruses that reach end-users mailboxes. “Conservative” policies are tailored to
avoid false positives and prevent users from missing messages, regardless of
policies.
Table 6-6
Aggressive and Conservative Email Security Manager Settings
Aggressive Settings
Conservative Settings
Anti-Spam
Positively identified spam:
Drop
Drop
Suspected spam: Quarantine
Marketing mail: Deliver and
prepend “
prepend “
[Marketing]
” to
the subject messages
Positively identified spam: Quarantine
Suspected spam: Deliver and prepend
“
“
[Suspected Spam]
” to the subject of
messages
Marketing mail: Disabled