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Capítulo II MARCO TEÓRICO

2.4 Marco legal

Under Policy Configuration - Job Templates you will find a number of jobs for blocking various file formats and sizes:

Block office files > 10 MB

Microsoft Office files exceeding 10 MB •

Block sound files > 5 MB

Sound files exceeding 5 MB •

Block video files > 5 MB

Video files exceeding 5 MB

Tip: Unlike checking the e-mail size, checking the format and the size of

attachments applies to attachments only. Neither the subject nor the message body nor the e-mail header are taken into account.

We will use the Block office files > 10 MB job as an example. Drag this job to the Mail

Transport Jobs folder and open it there with a double-click.

General Settings

Under the General tab, enter a name for the job. An active job has a checkmark in the job symbol. Set the job to Enabled: Yes. Once you have saved your settings with Apply and closed the job, the job is active.

By default, the Subject extension is pre-set to AntiVir checked. If enabled, this text is added to the subject of each mail checked by the job.

This job does not process mails that are being resent from Quarantine (AntiVir Monitor

- <select quarantined email> - All Tasks - Resend quarantine item), even if the Resubmit the email to all AntiVir jobs has been enabled. The Ignore emails resent from quarantine option means that this job is systematically skipped when a mail is

resent from Quarantine.

For further information on sending quarantined mail refer toSending From Quarantine. For details on the Mission Critical option refer toThis job is mission-criticalin the section "AntiVir".

Setting up Address Conditions

Under the Addresses tab, specify the senders or recipients to which this job is to apply. You can select addresses from existing lists or from your own ones.

For details on how to make the best use of address lists and details, refer to the description underAddress Lists.

Setting up Content Conditions

Under the Conditions tab you can set the requirements as to which mails or documents a job is to be run for.

For the use and settings of conditions refer toConditions.

Note: The content conditions and the address conditions set in the Addresses tab must simultaneously come true, for a job to be run (logicalAND).

Specifying Fingerprint and Size

Under theFingerprint/Size tab, enter the maximum permissible e-mail size and the fingerprint format:

Note: Unlike for simple fingerprint checking, the Scan inside compressed attachments option is not available here. To limit the size of compressed files, enter their formats in this job.

Fingerprint/Size conditions: To specify the size in kilobytes, click 10000. To select a

fingerprint category, an individual fingerprint or the maximum size from the list of fingerprints, click on Microsoft Office. The following view is displayed:

With the Add and Remove buttons, you can assign entire categories or individual fingerprints to the list of denied and/or allowed fingerprints. To do so, double-click the category in the left pane or click the + sign to open it.

Tip: You can enter a category such as “Microsoft Office” under Selected

Fingerprints and define one or more fingerprints from that category as exception under Exceptions. To keep a clear overview, do not use the same job for too many categories.

For further information on fingerprints and on entering name and binary patterns, refer to Configuring Fingerprints.

Defining Actions

Under the Actions tab, specify the actions to be taken when the job finds an e-mail

In this example, a copy of the message is placed in Quarantine, the infected attachments are deleted, and the message is delivered without its attachment. A notification on the restriction is sent to the Administrator. You can select this notification from the list menu of available notification templates, which you can format using the HTML toolbar or by entering appropriate HTML code yourself.

To define further actions, click the Add button.

For a description of the procedure, refer to the description in the AntiVir chapter under Enabling Virus Scanning - Example, "Defining Actions".

Selecting Servers / Job Details

To select servers and specify job details proceed as described underSelecting Servers andEntering Job Details.

5 AntiVir Wall

5.1 Overview

AntiVir Wall is used to filter e-mails or attachments according to their text content, check images for offensive contents, classify e-mails according to their content, to restrict inbound or outbound e-mail addresses and to limit the number of recipients per e-mail.

Job types

Filtering by e-mail address

Job Type: AntiVir Wall Email Address Filtering

Filtering by message or attachment content Job Type: AntiVir Wall Content Filtering

Spam filtering

Job Type: AntiVir Wall Spam Filtering

Checking for offensive images with Xblock Job Type: AntiVir Wall Xblock Image Filtering

Restricting the number of recipients

Job Type: AntiVir Wall Recipient Limit Filtering

Note: Create a separate job for each restriction type! Job types cannot be changed later.

For details on setting up jobs, refer to the sample jobs, such asBlocking Senders and/or Recipients - Example.

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