IronPort - advanced configuration guide

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Cisco IronPort AsyncOS 7.6 for Email Advanced Configuration Guide
Chapter 6 Using Message Filters to Enforce Email Policies
Note The alt-mailhost action prevents a message classified as spam by an anti-spam scanning engine from
being quarantined. The alt-mailhost action overrides the quarantine action and sends it to the specified
mail host.
The following filter redirects recipient addresses to the host example.com for all messages.
localRedirectFilter:
if(true)
{
}
Thus, a message directed to joe@anywhere.com is delivered to the mailhost at example.com with the
Envelope To address joe@anywhere.com. Note that any additional routing information specified by the
smtproutes command still affects the routing of the message. (See Routing Email for Local Domains,
page 2-1.)
Note The alt-mailhost action does not support specifying a port number. To do this, add an SMTP route
instead.
The following filter redirects all messages to 192.168.12.5:
local2Filter:
if(true)
{
}
alt-mailhost('example.com');
alt-mailhost('192.168.12.5');
Alter Source Host (Virtual Gateway address) Action
The alt-src-host action changes the source host for the message to the source specified. The source
host consists of the IP interface or group of IP interfaces that the messages should be delivered from. If
a group of IP interfaces is selected, the system round-robins through all of the IP interfaces within the
group as the source interface when delivering email. In essence, this allows multiple Virtual Gateway
addresses to be created on a single Cisco IronPort Email Security appliance. For more information, see
Using Virtual Gateway Technology, page 2-59.
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