Cisco Cisco Email Security Appliance C190 User Guide
7-12
Cisco AsyncOS 8.0.1 for Email User Guide
Chapter 7 Defining Which Hosts Are Allowed to Connect Using the Host Access Table (HAT)
Understanding Predefined Sender Groups and Mail Flow Policies
lists the predefined sender groups and mail flow policies that are configured when a private
listener is created.
Note
When you run the System Setup Wizard on a Cisco appliance model that has only two Ethernet ports,
you are prompted to create only one listener. It creates a public listener that also includes a $RELAYED
mail flow policy that is used to relay mail for internal systems. For Cisco appliance models that have
more than two Ethernet ports, the RELAYLIST sender group and $RELAYED mail flow policy only
appear on private listeners.
you are prompted to create only one listener. It creates a public listener that also includes a $RELAYED
mail flow policy that is used to relay mail for internal systems. For Cisco appliance models that have
more than two Ethernet ports, the RELAYLIST sender group and $RELAYED mail flow policy only
appear on private listeners.
UNKNOWNLIST
The Unknownlist sender group may be useful if
you are undecided about the mail flow policy you
should use for a given sender. The mail flow
policy for this group dictates that mail is accepted
for senders in this group, but the Cisco Anti-Spam
software (if enabled for the system), the anti-virus
scanning engine, and the Cisco SenderBase
Reputation Service should all be used to gain
more information about the sender and the
message content. Rate limits for senders in this
group are also enabled with default values. For
more information on virus scanning engines, see
you are undecided about the mail flow policy you
should use for a given sender. The mail flow
policy for this group dictates that mail is accepted
for senders in this group, but the Cisco Anti-Spam
software (if enabled for the system), the anti-virus
scanning engine, and the Cisco SenderBase
Reputation Service should all be used to gain
more information about the sender and the
message content. Rate limits for senders in this
group are also enabled with default values. For
more information on virus scanning engines, see
. For
more information on the SenderBase Reputation
Service, see
Service, see
.
$ACCEPTED
ALL
Default sender group that applies to all other
senders. For more information, see
senders. For more information, see
$ACCEPTED
Table 7-6
Predefined Sender Groups and Mail Flow Policies for Public Listeners (continued)
Predefined Sender Group
Description
Default Configured
Mail Flow Policy
Mail Flow Policy
Table 7-7
Predefined Sender Groups and Mail Flow Policies for Private Listeners
Predefined Sender
Group
Group
Description
Default Configured
Mail Flow Policy
Mail Flow Policy
RELAYLIST
Add senders you know should be allowed to relay to the
Relaylist sender group. The $RELAYED mail flow policy
is configured so that email from senders you are allowing
to relay has no rate limiting, and the content from those
senders is not scanned by the anti-spam scanning engine or
anti-virus software.
Relaylist sender group. The $RELAYED mail flow policy
is configured so that email from senders you are allowing
to relay has no rate limiting, and the content from those
senders is not scanned by the anti-spam scanning engine or
anti-virus software.
Note
The RELAYLIST sender group includes the
systems allowed to relay email when the System
Setup Wizard was run.
systems allowed to relay email when the System
Setup Wizard was run.
$RELAYED
ALL
Default sender group that applies to all other senders. For
more information, see
more information, see
$BLOCKED