Cisco Cisco Email Security Appliance C650 Guía Del Usuario
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User Guide for AsyncOS 9.7 for Cisco Email Security Appliances
Chapter 25 Configuring Routing and Delivery Features
Set Email Delivery Parameters
Default Maximum Concurrency
You also specify the default maximum number of concurrent connections the appliance makes for
outbound message delivery. (The system-wide default is 10,000 connections to separate domains.) The
limit is monitored in conjunction with the per-listener maximum outbound message delivery
concurrency (the default per listener is 600 connections for private listeners and 1000 connections for
public listeners). Setting the value lower than the default prevents the gateway from dominating weaker
networks. For example, certain firewalls do not support large numbers of connections, and this could
induce Denial of Service (DoS) warnings in these environments.
outbound message delivery. (The system-wide default is 10,000 connections to separate domains.) The
limit is monitored in conjunction with the per-listener maximum outbound message delivery
concurrency (the default per listener is 600 connections for private listeners and 1000 connections for
public listeners). Setting the value lower than the default prevents the gateway from dominating weaker
networks. For example, certain firewalls do not support large numbers of connections, and this could
induce Denial of Service (DoS) warnings in these environments.
deliveryconfig Example
In the following example, the
deliveryconfig
command is used to set the default interface to “Auto”
with “Possible Delivery” enabled. The system-wide maximum outbound message delivery is set to 9000
connections.
connections.
mail3.example.com> deliveryconfig
Choose the operation you want to perform:
- SETUP - Configure mail delivery.
[]> setup
Choose the default interface to deliver mail.
1. Auto
2. PublicNet2 (192.168.3.1/24: mail4.example.com)
3. Management (192.168.42.42/24: mail3.example.com)
4. PrivateNet (192.168.1.1/24: mail3.example.com)
5. PublicNet (192.168.2.1/24: mail3.example.com)
[1]> 1
Enable "Possible Delivery" (recommended)? [Y]> y
Please enter the default system wide maximum outbound message delivery
concurrency
[10000]> 9000