Cisco Cisco Email Security Appliance C380 Mode D'Emploi
4-10
Cisco AsyncOS 8.5.5 for Email Security User Guide
Chapter 4 Understanding the Email Pipeline
Delivery
Delivery
The delivery phase of the Email Pipeline focuses on the final phase of email processing, including
limiting connections, bounces, and recipients.
limiting connections, bounces, and recipients.
Virtual gateways
The Virtual Gateway technology enables users to separate the 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.
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.
Delivery Features” chapter.
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.
Features” chapter.
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.
Features” chapter.
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.
Delivery Features” chapter.
Global Unsubscribe
Use Global Unsubscribe to ensure that specific recipients, recipient domains, or IP addresses never
receive messages from the 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 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.
Features” chapter.