Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
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User Guide for AsyncOS 9.8 for Cisco Email Security Appliances
Chapter 28 Using Email Security Monitor
Email Security Monitor Pages
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Resource Conservation Mode: When a appliance becomes overloaded, it will enter “Resource
Conservation Mode” (RCM) and send a CRITICAL system alert. This is designed to protect the
device and allow it to process any backlog of messages. Your appliance should enter RCM
infrequently and only during a very large or unusual increase in mail volume. Frequent RCM alerts
may be an indication that the system is becoming overloaded. See
Conservation Mode” (RCM) and send a CRITICAL system alert. This is designed to protect the
device and allow it to process any backlog of messages. Your appliance should enter RCM
infrequently and only during a very large or unusual increase in mail volume. Frequent RCM alerts
may be an indication that the system is becoming overloaded. See
Related Topics
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System Capacity- Workqueue
The Workqueue page shows the average time a message spends in the work queue, excluding any time
spent in the Spam quarantine or in a policy, virus, or outbreak quarantine. You can view time periods
from an hour up to one month. This average can help in identifying both short term events delaying mail
delivery and identify long term trends in the workload on the system.
spent in the Spam quarantine or in a policy, virus, or outbreak quarantine. You can view time periods
from an hour up to one month. This average can help in identifying both short term events delaying mail
delivery and identify long term trends in the workload on the system.
Note
If a message is released from the quarantine into the work queue, the “average time in work queue”
metric ignores this time. This prevents double-counting and distorted statistics due to extended time
spent in a quarantine.
metric ignores this time. This prevents double-counting and distorted statistics due to extended time
spent in a quarantine.
The report also shows the volume of messages in the work queue over a specified time period, and it
shows the maximum messages in the work queue over the same time period. The graphical
representation of the maximum messages in the work queue also shows the work queue threshold level.
shows the maximum messages in the work queue over the same time period. The graphical
representation of the maximum messages in the work queue also shows the work queue threshold level.
Occasional spikes in the Workqueue graphs are normal and expected. If the messages in the work queue
remain higher than the configured threshold for a long duration, this may indicate a capacity issue. In
this scenario, consider tuning the threshold level or review the system configuration.
remain higher than the configured threshold for a long duration, this may indicate a capacity issue. In
this scenario, consider tuning the threshold level or review the system configuration.
For instructions to change the work queue threshold level, see
Tip
When reviewing the work queue page, you may want to measure the frequency of work queue backups,
and take note of work queue backups that exceed 10,000 messages.
and take note of work queue backups that exceed 10,000 messages.
System Capacity- Incoming Mail
The incoming mail page shows incoming connections, the total number of incoming messages, the
average message size, and the total incoming message size. You can limit the results to the time range
that you specify. It is important to have an understanding of the trends of normal message volume and
spikes in your environment. You can use the incoming mail page to help track volume growth over time
average message size, and the total incoming message size. You can limit the results to the time range
that you specify. It is important to have an understanding of the trends of normal message volume and
spikes in your environment. You can use the incoming mail page to help track volume growth over time