Cisco Cisco Email Security Appliance C380 사용자 가이드
Chapter 2 Configuring Routing and Delivery Features
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Cisco IronPort AsyncOS 7.1 for Email Advanced Configuration Guide
OL-22164-02
Controlling Email Delivery
Uncontrolled high-volume email delivery can overwhelm recipient domains.
AsyncOS gives you full control of message delivery by defining the number of
connections your appliance will open or the number of messages your appliance
will send to each destination domain.
AsyncOS gives you full control of message delivery by defining the number of
connections your appliance will open or the number of messages your appliance
will send to each destination domain.
Using the Destination Controls feature (Mail Policies > Destination Controls in
the GUI, or the
the GUI, or the
destconfig
command in the CLI), you can control:
Rate Limiting
•
Concurrent Connections: number of simultaneous connections to remote
hosts the appliance will attempt to open.
hosts the appliance will attempt to open.
•
Maximum Messages Per Connection: number of messages your appliance
will send to a destination domain before the appliance initiates a new
connection.
will send to a destination domain before the appliance initiates a new
connection.
•
Recipients: number of recipients the appliance will send to a given remote
host in a given time period.
host in a given time period.
•
Limits: how to apply the limits you have specified on a per-destination and
per MGA hostname basis.
per MGA hostname basis.
TLS
•
Whether TLS connections to remote hosts will be accepted, allowed, or
required (see
required (see
•
Whether to send an alert when TLS negotiation fails when delivering a
message to a remote host that requires a TLS connection. This is a global
setting, not a per-domain setting.
message to a remote host that requires a TLS connection. This is a global
setting, not a per-domain setting.
•
Assign a TLS certificate to use for all outbound TLS connections to remote
hosts.
hosts.
Bounce Verification
•
Whether or not to perform address tagging via IronPort Bounce Verification
(see
(see