Cisco Cisco Email Security Appliance C190 Guida Utente
4-10
Cisco IronPort AsyncOS 7.6 for Email Configuration Guide
OL-25136-01
Chapter 4 Understanding the Email Pipeline
Virtual gateways
The Cisco IronPort Virtual Gateway technology enables users to separate the Cisco IronPort appliance
into multiple Virtual Gateway addresses from which to send and receive email. Each Virtual Gateway
address is given a distinct IP address, hostname and domain, and email delivery queue.
into multiple Virtual Gateway addresses from which to send and receive email. Each Virtual Gateway
address is given a distinct IP address, hostname and domain, and email delivery queue.
For more information, see “Using Virtual Gateway™ Technology” in the “Configuring Routing and
Delivery Features” chapter of the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.
Delivery Features” chapter of the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.
Delivery Limits
Use the
deliveryconfig
command to set limits on delivery, based on which IP interface to use when
delivering and the maximum number of concurrent connections the appliance makes for outbound
message delivery.
message delivery.
For more information, see “Set Email Delivery Parameters” in the “Configuring Routing and Delivery
Features” chapter of the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.
Features” chapter of the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.
Domain-Based Limits
For each domain, you can assign a maximum number of connections and recipients that will never be
exceeded by the system in a given time period. This “good neighbor” table is defined through the Mail
Policies > Destination Controls page (or the
exceeded by the system in a given time period. This “good neighbor” table is defined through the Mail
Policies > Destination Controls page (or the
destconfig
command).
For more information, see “Controlling Email Delivery” in the “Configuring Routing and Delivery
Features” chapter in the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.
Features” chapter in the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.
Domain-Based Routing
Use the Network > SMTP Routes page (or the
smtproutes
command) to redirect all email for a particular
domain to a specific mail exchange (MX) host, without rewriting the envelope recipient.
For more information, see “Routing Email for Local Domains” in the “Configuring Routing and
Delivery Features” chapter of the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.
Delivery Features” chapter of the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.
Global Unsubscribe
Use Global Unsubscribe to ensure that specific recipients, recipient domains, or IP addresses never
receive messages from the Cisco IronPort appliance. If Global Unsubscribe is enabled, the system will
check all recipient addresses against a list of “globally unsubscribed” users, domains, email addresses,
and IP Addresses. Matching emails are not sent.
receive messages from the Cisco IronPort appliance. If Global Unsubscribe is enabled, the system will
check all recipient addresses against a list of “globally unsubscribed” users, domains, email addresses,
and IP Addresses. Matching emails are not sent.
For more information, see “Using Global Unsubscribe” in the “Configuring Routing and Delivery
Features” chapter of the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.
Features” chapter of the Cisco IronPort AsyncOS for Email Advanced Configuration Guide.