Cisco Cisco Email Security Appliance X1070 故障排查指南
ESA FAQ: How can I alter the maximum message
size for inbound mail?
size for inbound mail?
Document ID: 117972
Contributed by Kevin Luu, Cisco TAC Engineer.
Jul 16, 2014
Jul 16, 2014
Contents
Introduction
How can I alter the maximum message size for inbound mail?
How can I alter the maximum message size for inbound mail?
Introduction
This document describes the process that is used in order to alter the maximum message size for inbound mail
on the Cisco Email Security Appliance (ESA).
on the Cisco Email Security Appliance (ESA).
How can I alter the maximum message size for inbound
mail?
mail?
The default maximum message size for inbound mail is 10mb for most mail flow policies. The Trusted mail
flow policy is set at 100mb. The maximum message size includes the message body and any attachments.
flow policy is set at 100mb. The maximum message size includes the message body and any attachments.
Note: The mail flow policies, such as the HAT Overview, are specific to a listener. If you have multiple
listeners, you must ensure that you choose the correct listener. For example, if you want to modify the
maximum message size for inbound mail, navigate to Mail Policies > Mail Flow Policies and choose the
Inbound listener.
listeners, you must ensure that you choose the correct listener. For example, if you want to modify the
maximum message size for inbound mail, navigate to Mail Policies > Mail Flow Policies and choose the
Inbound listener.
The default policy applies to outbound mail if you have a single listener configured for both the Inbound and
Outbound listeners. If you have separate listeners configured for the Inbound and Outbound email, then the
default settings are different for both listeners and must be configured independently.
Outbound listeners. If you have separate listeners configured for the Inbound and Outbound email, then the
default settings are different for both listeners and must be configured independently.
Complete these steps in order to change the maximum message size to a company policy of 20mb for inbound
mail:
mail:
Navigate to Mail Policies > Mail Flow Policies.
1.
Click Default Policy Parameters.
2.
Locate the Max. Message Size: field and change the custom value to 20M.
3.
Click Submit.
4.
Click Commit changes.
5.
Note: In the Mail Flow Policies section, you can click Accepted, Throttled, Blocked, and Trusted in order to
enter a custom value, if desired.
enter a custom value, if desired.