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Cisco IronPort AsyncOS 7.3 for Email Daily Management Guide
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Chapter 4      Quarantines
Working with Safelists and Blocklists
message meets the criteria for a content-related mail policy. If a message is part 
of a safelist, it may not be delivered to the end user depending on other scanning 
settings.
The Safelist/Blocklist Database
When a user adds an entry to a safelist or blocklist, the entry is stored in a database 
on the IronPort appliance. If you use M-series, the database is saved on the 
M-series appliance and periodically updated and synchronized on all related 
C-Series appliances. If the IronPort Spam Quarantine is hosted on a C-series 
appliance, the safelist/blocklist database is maintained on that C-Series appliance. 
If you use multiple C-Series appliances without an M-Series appliance, you may 
need to synchronize databases and configuration settings manually. For 
information about synchronizing safelist/blocklist settings and databases across 
different C-Series appliances, see 
.
For information about working with the backup .CSV database, see 
.
For more information about working with safelists and blocklists on an M-Series 
appliance, see the Cisco IronPort AsyncOS for Security Management User Guide .
Creating and Maintaining Safelists and Blocklists
The safelists and blocklists are created and maintained by end users. However, an 
administrator enables the feature and configures delivery settings for email 
messages matching entries in the blocklist. To create and maintain safelists and 
blocklists, the administrators and end-users complete the following tasks:
  •
Administrator tasks. Administrators enable and configure the IronPort 
Spam Quarantine, enable the Safelist/Blocklist feature, backup and restore 
the Safelist/Blocklist database, synchronize the Safelist/Blocklist database 
between different appliances, and troubleshoot safelist and blocklist issues 
via logs, alerts, and custom headers. For more information about 
administrator tasks, see