Cisco Cisco Email Security Appliance C160 Mode D'Emploi
C H A P T E R
8-1
Cisco AsyncOS 8.5.5 for Email Security User Guide
8
Accepting or Rejecting Connections Based on
Domain Name or Recipient Address
Domain Name or Recipient Address
•
•
Overview of Accepting or Rejecting Connections Based on the
Recipient’s Address
Recipient’s Address
AsynchOS uses a Recipient Access Table (RAT) for each public listener to manage accept and reject
actions for recipient addresses. Recipent addresses include these:
actions for recipient addresses. Recipent addresses include these:
•
Domains
•
Email addresses
•
Groups of email addresses
The System Setup Wizard guides the administrator in configuring at least one public listener (with
default values) on the appliance. Configuring a public listener during setup involves specifying default
local domains or specific addresses to accept mail. These local domains or specific addresses are the first
entries in the RAT for that public listener.
default values) on the appliance. Configuring a public listener during setup involves specifying default
local domains or specific addresses to accept mail. These local domains or specific addresses are the first
entries in the RAT for that public listener.
For eac h public listener, the default entry, “All Other Recipients”, rejects email from all recipients. The
administrator defines all local domains for which the appliance accepts messages. Optionally, you can
also define specific users for whom the appliance will accept or reject messages. AsyncOS allows you
to define acceptable local domains and specific users using theRecipient Access Table (RAT).
administrator defines all local domains for which the appliance accepts messages. Optionally, you can
also define specific users for whom the appliance will accept or reject messages. AsyncOS allows you
to define acceptable local domains and specific users using theRecipient Access Table (RAT).
You might need to configure a listener to accept messages for multiple domains. For example, if your
organization uses the domain
organization uses the domain
currentcompanyname.com
and it previously used
oldcompanyname.com
,
then you might accept messages for both
currentcompanyname.com
and
oldcompanyname.com
. In this
case, include both local domains in the RAT for your public listener.
(Note: the Domain Map feature can map messages from one domain to another. See the Domain Map
feature section of the “Configuring Routing and Delivery Features” chapter.)
feature section of the “Configuring Routing and Delivery Features” chapter.)
Overview of the Recipient Access Table (RAT)
The Recipient Access Table defines which recipients are accepted by a public listener. At a minimum,
the table specifies the address and whether to accept or reject it.
the table specifies the address and whether to accept or reject it.