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PureMessage for UNIX - Sophos

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sophos pureMessage <strong>for</strong> unix<br />

In addition to spam and virus protection, <strong>PureMessage</strong> features include:<br />

16<br />

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Blocking large attachments or attachments of certain types by granular<br />

true file type detection, regardless of extension or content type header.<br />

Adding disclaimers to outbound mail.<br />

Checking <strong>for</strong> keywords, phrases, and credit card numbers.<br />

Encrypting messages using TLS or routing messages to third-party endto-end<br />

encryption solutions.<br />

The Policy Manager is typically used <strong>for</strong>:<br />

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•<br />

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Email filter policy management.<br />

Setting the spam thresholds and policy.<br />

Managing allow lists, block lists, and opt-out lists.<br />

<strong>PureMessage</strong> allows you to create dynamic policies that use in<strong>for</strong>mation stored<br />

in LDAP systems. This can simplify the ongoing maintenance of complex<br />

policies. Extensible architecture also allows you to integrate <strong>PureMessage</strong> with<br />

existing archiving, encryption, or access control systems.<br />

tests and actions<br />

The Policy Constructor lists all the available test and action options, and defines<br />

which specific tests and actions to take when a certain rule is applied.<br />

For example, the Quarantine and Deliver rule applies two actions to the<br />

message if <strong>PureMessage</strong> assigns a spam probability greater than 50%:<br />

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A hidden x-header is added to the message, listing the spam probability<br />

and rules that were hit.<br />

A copy of the message is placed in the quarantine.<br />

Figure 9: Configuring a spam-probability test<br />

Managing policy<br />

The Policy Manager is<br />

used to define spam and<br />

control how messages are<br />

handled.

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