Cisco Cisco Content Security Management Appliance M1070 Guía Del Usuario
12-6
AsyncOS 9.5.2 for Cisco Content Security Management Appliances User Guide
Chapter 12 Configuring SMTP Routing
Managing SMTP Routes
SMTP Routes and DNS
Use the special keyword
USEDNS
to tell the appliance to do MX lookups to determine next hops for
specific domains. This is useful when you need to route mail for subdomains to a specific host. For
example, if mail to example.com is to be sent to the company’s Exchange server, you might have
something similar to the following SMTP route:
example, if mail to example.com is to be sent to the company’s Exchange server, you might have
something similar to the following SMTP route:
example.com exchange.example.com
However, for mail to various subdomains (foo.example.com), add an SMTP route that looks like this:
.example.com USEDNS
Ethernet interface: Data 2
IP interface: PublicNet (e.g. 192.168.2.1)
Public Listener: InboundMail
SMTP
Email
Security appliance
The
smtproutes
command was
used to route mail accepted on the
public listener InboundMail for
public listener InboundMail for
example.com
to the host
exchange.example.com
.
Ethernet interface: Data 1
IP interface: PrivateNet (e.g. 192.168.1.1)
Host Access Table (HAT):
WHITELIST: $TRUSTED
BLACKLIST: $BLOCKED
SUSPECTLIST: $THROTTLED
UNKNOWNLIST: $ACCEPTED
spamdomain.com REJECT
.spamdomain.com REJECT
251.192.1. TCPREFUSE
169.254.10.10 RELAY
ALL: $ACCEPTED
exchange.example.com