Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

Each interface can be configured to accept mail (incoming), relay email (outgoing), or appliance 
management. During setup, you are limited to one of each. Typically, you would use one interface for 
incoming, one for outgoing, and one for appliance management. On the C170 appliances, you would 
typically use one interface for both incoming and outgoing mail, and the other interface for management.

You must configure one interface to receive email.

Assign and configure a logical IP address to one of the physical Ethernet interfaces on the appliance. If 
you decide to use both the Data 1 Ethernet port and the Data 2 Ethernet port, you need this information 
for both connections. 

C670, C370, and X1070 customers: Cisco recommends using one of the physical Ethernet ports to 
connect directly to the Internet for the purposes of receiving inbound email through public listeners, and 
using another physical Ethernet port to connect directly to your internal network for the purposes of 
relaying outbound email through private listeners.

C170 customers: Typically, the System Setup Wizard will configure only one physical Ethernet port 
with one listener for both receiving inbound email and relaying outbound email.

See 

. 

The following information is required:

The IP address assigned by your network administrator. This can be an IPv4 address, an IPv6 
address, or both.

For IPv4 addresses: the netmask of the interface. AsyncOS only accepts a netmask in CIDR format. 
For example, 

/24

 for the 

255.255.255.0

 subnet.

For IPv6 addresses: the prefix in CIDR format. For example 

/64

 for a 64-bit prefix.

(optional) A fully-qualified hostname for the IP address.

IP addresses within the same subnet cannot be configured on separate physical Ethernet interfaces. See 

 for more detailed information on Network and IP 

Address configuration.

When configuring your interfaces to accept mail, you define:

the domain for which to accept mail

destination (SMTP Route) for each domain, this is optional

Mark the checkbox for Accept Incoming Mail to configure the interface to accept mail. Enter the name 
of the domain for which to accept mail.

Enter the Destination. This is the SMTP Route or name of the machine(s) where you would like to route 
email for the domains specified.

This is the first SMTP Routes entry. The SMTP Routes table allows you to redirect all email for each 
domain (also known as a Recipient Access Table (RAT) entry) you enter to a specific mail exchange 
(MX) host. In typical installations, the SMTP Routes table defines the specific groupware (for example, 
Microsoft Exchange) server or the “next hop” in the email delivery for your infrastructure. 

For example, you can define a route that specifies that mail accepted for the domain 

example.com

 and 

all of its subdomains 

.example.com

 is routed the to the groupware server 

exchange.example.com

.

You can enter multiple domains and destinations. Click Add Row to add another domain. Click the trash 
can icon to remove a row.