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In this window, you can configure additional settings of SpIDer Mail including scan options, message processing particularities, and optimization parameters.
To open this window
In the SpIDer Mail settings window, select the Actions page and then click Options.
 For details on a certain option, click a corresponding item in the picture. Scan Options
In this group, you can select the following additional options for e-mail scans.  Details
Option
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Description
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Heuristic analysis
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Instructs SpIDer Mail to use heuristic analysis when scanning e-mail which allows detecting suspicious objects , i.e. infected with viruses that are yet unknown, with high probability.
This options enabled by default. To detect known threats only, disable this option.
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Virus activity control
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Instructs SpIDer Mail to detect peculiar signs of mass distribution of viruses via e-mail. When operating in this mode, SpIDer Mail may block your attempts at sending messages. In such case, disable this option.
This option is enabled by default.
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Check archives
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Instructs SpIDer Mail to check contents of archives in mail.
This option is disabled by default. When SpIDer Guard is enabled constantly, this default setting does not compromise security of your computer. If a file within an archive is infected, the malicious object will be detected and neutralized by SpIDer Guard immediately when you try to extract archived files. Including archives into constant scans may considerably reduce computer performance.
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Check installation packages
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Instructs SpIDer Mail to check installation packages.
This option is disabled by default.
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Additional Actions On Messages
In this group, you can configure additional actions to apply when SpIDer Mail processes messages.Details
Option
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Description
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Insert 'X‑Antivirus' heading into messages
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This option is enabled by default.
Instructs SpIDer Mail to add scan results and information on Dr.Web version to message headers after processing. You cannot edit data format.
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Delete modified messages on server
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Instructs SpIDer Mail to delete messages stopped by Dr.Web from mail servers. Messages are deleted regardless of the mail client settings if a Delete or Quarantine action is applied to them.
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Scanning Optimization Options
In this group, you can set conditions under which SpIDer Mail should acknowledge too complicated messages whose scanning is time consuming as unchecked. Details
To enable one or more options, select the corresponding checkboxes:
Option
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Description
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Message scan timeout
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The maximum message scanning time. If exceeded, SpIDer Mail stops the scan and acknowledges message as unchecked.
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Max file size to extract
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The maximum file size at unpacking. If the size of extracted files will exceed the limit, SpIDer Mail neither unpacks, nor scans the archive.
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Max compression ratio
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The maximum archives compression rate. If the compression rate of the archive exceed the limit, SpIDer Mail neither unpacks, nor scans the archive.
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Max archive level
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The maximum nesting level for archived files. During scan, SpIDer Mail proceeds unpacking and scanning the archive until this limit is exceeded.
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There is no restrictions for a parameter if the value is set to 0.
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