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
Recipient Count Rule
The
rcpt-count
rule compares the number of recipients of a message against an
integer value, in a similar way to the
body-size
rule. This can be useful for
preventing users from sending email to large numbers of recipients at once, or for
ensuring that such large mailing campaigns go out over a certain Virtual Gateway
address. The following example sends any email with more than 100 recipients
over a specific Virtual Gateway address:
ensuring that such large mailing campaigns go out over a certain Virtual Gateway
address. The following example sends any email with more than 100 recipients
over a specific Virtual Gateway address:
large_list_filter:
if (rcpt-count > 100) {
alt-src-host('mass_mailing_interface');
}
} else {
alt-src-host('interface_b');
}
load_balance_b:
if (random(2)) {
alt-src-host('interface_a');
} else {
alt-src-host('interface_b');
}