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More filters

The following filters are created by default; however, if necessary you can also switch them off by unchecking the box.

  • Disable HTML scripts
  • Filter malicious attachments

You can use the NEW button to set up new filter rules, or edit existing filters with the EDIT button. The filters created are shown in the list and can be enabled or disabled as required by checking the checkbox to the left. If you see a check in the checkbox, it means that that filter is active. If there is no checkmark in the box, the filter is inactive. To permanently delete a filter, click the relevant filter once to highlight it and then click the DELETE button.

The filter options available here are additional filters that support the actual G DATA software spam filter and make it easier for you to configure your own personal settings. The spam filter provides you with an extensive range of setting options for effectively blocking emails with undesirable content or from undesirable senders (e.g. mass email senders). The program checks for numerous email characteristics that are typical of spam. These characteristics are used to calculate a value reflecting the likelihood of it being spam. To this end multiple tabs are available providing you with all the relevant settings options sorted by subject.

When you create a new filter, a selection window appears in which you can specify the basic filter type. All of the other details about the filter can be created using a wizard, which will guide you through that filter type. This is a convenient way to create filters for every imaginable type of threat.

  • Disable HTML scripts: This filter disables scripts in the HTML part of an email. Scripts that might look OK on a web page tend to be rather irritating when they are integrated into an HTML email. In some cases, HTML scripts are also used to actively infect computers. In this event, scripts have the option of running not only when the infected attachment is opened but even in email preview mode.
  • Filter malicious attachments: A large number of filter options for filtering email attachments are provided. Most email viruses are spread through attachments, which usually have more or less well-hidden executable files. This can be a standard .exe file containing malware, or a VB script hidden in a graphic, film or music file that is assumed to be safe. In general, users should exercise extreme caution when opening email attachments. If in doubt, the sender of the email should be asked before opening files that have not been expressly requested.

Filter attachments

Under File extensions you can list the file extensions to which you would like to apply the respective filter. You can, for instance, combine all executable files (such as EXE and COM files) in a single filter, while also filtering out other formats (for instance MPEG, AVI, MP3, JPEG, JPG, GIF etc.) that are a burden for your mail server due to their size. You can, of course, also filter out archive files of your choice, such as ZIP, RAR or CAB files. Please use a semicolon to separate all file extensions of a filter group.

The function Also filter attachments in embedded mails ensures that the filtering performed under File extensions for the selected attachment types also applies to email messages that are themselves being forwarded as email attachments. This option should generally be enabled.

Choosing Only rename attachments has the effect that attachments that are to be filtered are not deleted automatically rather just renamed. This is not only recommended for executable files (such as EXE and COM) but also for Microsoft Office files that may contain executable scripts and macros. Renaming an attachment makes it impossible to open it simply by clicking it. Instead, the user must first save (and possibly rename) the attachment before it can be used. If the checkmark for the Only rename attachments function has not been set, the respective attachments are deleted directly.

Under Suffix you can enter a character string that should be appended to the file extension (*.exe_danger, for instance), which prevents this type of file from being executed by just clicking on it. Under Insert message in mail text you can inform the recipient of the filtered email that an attachment was deleted or renamed based on a filter rule.

Content filter

You can use the content filter to easily block email messages which contain certain subjects or text.

Simply enter the keywords and expressions to which the G DATA software should react under Search criterion. It is possible to use the AND and OR logical operators to link text components with one another.

Under Search scope you can now enter those elements of an email message that the software should search for the defined terms. The header is the part of an email message that, among other things, contains the email address of the sender and the recipient, the subject line, information on the programs and protocols used, and the date sent. If you have, for instance, activated Subject as the search area, only the content of the subject line will be checked, and no other information contained in the header. If you select Mail text as the search scope, you have the additional option of limiting the search scope to pure text emails, or extending the search to text in HTML emails (HTML text).

By checking Embedded mails you can define whether the content filter search should also cover email messages included as attachments in received messages.
Under Reaction you can determine what is to be done with emails identified as spam by the G DATA software. Using Reject mail means the email in question will not even be accepted by your email program.

If you check the box for Insert warning in mail subject and text you can prefix the actual text in the subject line with a warning (prefix in subject line), e.g. Spam or Warning. You can also enter text to be placed above the actual email text in the event of suspected spam (Message in text).

If you use Microsoft Outlook (caution: not to be confused with Outlook Express or Outlook Mail), you also have the option of moving emails containing suspected spam to a fully customizable folder in your mailbox (Move mail to folder). You can create this folder directly via the G DATA software by defining the corresponding folder under Folder name.

Sender filter

You can use the sender filter to easily block email coming from certain senders. To do this, simply enter the email addresses or domain names to which the G DATA software should react under Sender/domains. Use a semicolon to separate multiple entries.

Under Reaction you can determine what is to be done with emails identified as spam by the G DATA software.

Using Reject mail means the email in question will not even be accepted by your email program.

If you check the box for Insert warning in mail subject and text you can prefix the actual text in the subject line with a warning (prefix in subject line), e.g. Spam or Warning. You can also enter text to be placed above the actual email text in the event of suspected spam (Message in text).

If you use Microsoft Outlook (caution: not to be confused with Outlook Express or Windows Mail), you also have the option of moving emails containing suspected spam to a fully customizable folder in your mailbox (Move mail to folder). You can create this folder directly via the G DATA software by defining the corresponding folder under Folder name.

Language filter

The language filter lets you automatically define email in specific languages as spam. For example, if in general you do not have email contact with a German-speaking person, then you can set German as a spam language which should be filtered out. Simply select the languages in which you do not receive regular email contact and the G DATA software will raise the spam probability for such emails.
Under Reaction you can determine what is to be done with emails identified as spam by the G DATA software.

Using Reject mail means the email in question will not even be accepted by your email program.

If you check the box for Insert warning in mail subject and text you can prefix the actual text in the subject line with a warning (prefix in subject line), e.g. Spam or Warning. You can also enter text to be placed above the actual email text in the event of suspected spam (Message in text).

If you use Microsoft Outlook (caution: not to be confused with Outlook Express or Windows Mail), you also have the option of moving emails containing suspected spam to a fully customizable folder in your mailbox (Move mail to folder). You can create this folder directly via the G DATA software by defining the corresponding folder under Folder name.

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