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Barracuda Email Security Gateway

Quarantine: An Overview

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Using Quarantine is Optional

By default, the Barracuda Email Security Gateway does not quarantine incoming or outgoing messages, but you may want to enable quarantine for inbound mail, at least, because it offloads storage of potential spam from the mail server and backups. It also keeps potential spam messages out of the user’s inbox. While some organizations require quarantine behavior, tagging inbound messages that might be spam is recommended over quarantining them for several reasons:

  • With tagging of inbound messages, the user doesn’t need an additional inbox for storing quarantined messages because the potential spam message is delivered to their regular inbox with a special word or phrase prepended to the Subject line to indicate that it has been tagged as potential spam. These messages can be filtered to a special mailbox if the user desires, or can be viewed or deleted from their regular inbox.
  • Tagging inbound messages on the Barracuda Email Security Gateway saves system resources because the message is not stored on the appliance itself; it’s sent on to the user’s mailbox or to an administrator’s mailbox to manage.

Note that, by enabling quarantine of incoming messages identified as possible spam, either the user or the administrator is required to maintain the quarantine inbox and settings.

Quarantine of inbound mail can be enabled or disabled in the Spam Scoring Limits section on the BASIC > Spam Checking page as well as on various BLOCK/ACCEPT pages. If enabled, you can select either Global quarantine or Per-User quarantine.

For more information on using inbound quarantine, see Managing Inbound Quarantine.

Quarantine of Outbound Mail

Enable or disable in the Outbound Spam Scoring Limits section on the BASIC > Spam Checking page and set up filtering criteria for outbound quarantine on various BLOCK/ACCEPT pages. Outbound quarantined mail can be logged and managed at the per-domain level as well as at the global level.

For more information on using outbound quarantine, see Managing Outbound Quarantine.

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