Руководство Пользователя для Cisco Cisco Content Security Management Appliance M160
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Cisco IronPort AsyncOS 7.2.0 for Security Management User Guide
OL-21768-01
Chapter 10 Configuring SMTP Routing
table, the entry for
host1.example.com
will be used because it is the more specific
entry — even if it appears after the less specific
example.com
entry. Otherwise,
the system performs a regular MX lookup on the domain of the Envelope
Recipient.
Recipient.
Default SMTP Route
You can also define a default SMTP route with the special keyword
ALL
. If a
domain does not match a previous mapping in the SMTP Routes list, it defaults to
being redirected to the MX host specified by the
being redirected to the MX host specified by the
ALL
entry.
When you print the SMTP Routes entries, the default SMTP route is listed as
ALL:
. You cannot delete the default SMTP route; you may only clear any values
entered for it.
Configure the default SMTP route using the Management Appliance > Network
> SMTP Routes page or the smtproutes command.
> SMTP Routes page or the smtproutes command.
Defining an SMTP Route
The Email Security appliance routes mail to local domains to hosts specified
using the Management Appliance > Network > SMTP Routes page (or the
smtproutes command). This feature is similar to the sendmail mailer table
feature. (The SMTP Routes page and smtproutes command are an expansion of
the AsyncOS 2.0 Domain Redirect feature.):
using the Management Appliance > Network > SMTP Routes page (or the
smtproutes command). This feature is similar to the sendmail mailer table
feature. (The SMTP Routes page and smtproutes command are an expansion of
the AsyncOS 2.0 Domain Redirect feature.):
Use the Management Appliance > Network > SMTP Routes page (or the
smtproutes command) to construct routes. When you create a new route, you first
specify the domain or partial domain for which you want to create a permanent
route. You then specify destination hosts. Destination hosts can be entered as
fully-qualified hostnames or as IP addresses. You can also specify a a special
destination host of
smtproutes command) to construct routes. When you create a new route, you first
specify the domain or partial domain for which you want to create a permanent
route. You then specify destination hosts. Destination hosts can be entered as
fully-qualified hostnames or as IP addresses. You can also specify a a special
destination host of
/dev/null
to drop the messages that match the entry. (So, in
effect, specifying
/dev/null
for the default route is will ensure that no mail
received by the appliance is ever delivered.)
Multiple destination host entries can contain both fully-qualified hostnames and
IP addresses. Separate multiple entries with commas.
IP addresses. Separate multiple entries with commas.
If one or more of the hosts are not responding, messages will be delivered to one
of the reachable hosts. If all the configured hosts are not responding, mail will be
queued for that host (does not fail over to using MX records).
of the reachable hosts. If all the configured hosts are not responding, mail will be
queued for that host (does not fail over to using MX records).