Cisco Cisco Email Security Appliance C160 Mode D'Emploi
Chapter 5 Using Message Filters to Enforce Email Policies
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Cisco IronPort AsyncOS 7.1 for Email Advanced Configuration Guide
OL-22164-02
Note
Non-final message filter actions are cumulative. If a message matches
multiple filters where each filter specifies a different action, then all
actions are accumulated and enforced. However, if a message matches
multiple filters specifying the same action, the prior actions are
overridden and the final filter action is enforced.
multiple filters where each filter specifies a different action, then all
actions are accumulated and enforced. However, if a message matches
multiple filters specifying the same action, the prior actions are
overridden and the final filter action is enforced.
Message Filter Example Syntax
The intuitive meaning of a filter specification is:
if the message matches the rule, then apply the actions in sequence. If the
else
clause is present, the actions within the
else
clause are executed in the event the
message does not match the rule.
The name of the filter you specify makes it easier to manage filters when you are
activating, deactivating, or deleting them.
activating, deactivating, or deleting them.
Message filters use the following syntax:
Example Syntax
Purpose
expedite:
filter name
if (recv-listener == 'InboundMail' or
recv-int == 'notmain')
rule specification
{
alt-src-host('outbound1');
skip_filters();
}
action specification
else
{
alt-src-host('outbound2');
}
optional alternative action
specification
specification