Antispam Settings

Configure your LANCOM R&S®Unified Firewall to protect your system from spam e‑mail.

Important:

The spam filter is included in the UTM license. When you boot your LANCOM R&S®Unified Firewall for the first time, the spam filter runs as a test version for 30 days. When this period has expired, the spam filter is deactivated automatically. For more information on licenses, see License.

Navigate to UTM > Email Security > Antispam Settings to open an editor panel to display, activate and adjust the spam filter settings.

The Antispam Settings configuration dialog allows you to view and to configure the following elements:

Input field Description
I/0 A slider switch indicates whether antispam is active (I) or inactive (0). Click the slider switch to change the status. This option is activated by default.
License This field displays the license information for your spam filter.
Spam Detection To select one of the following options, click the respective button:
  • Confirmed – E‑mails that contain known and verified spam patterns are classified as spam.
  • Bulk – Complimentary to the Confirmed setting, e‑mails sent by mail accounts that generally send mass e‑mail are classified as spam (default).
  • Suspect – Complimentary to the Confirmed and Bulk setting, mails sent from accounts that generally send large of e‑mails are classified as spam.
Spam Tag To decide how you want to mark e‑mails as spam, select one of the following options:
  • Header – The original e‑mail is marked as spam in the mail header.
  • Subject – The original e‑mail is marked as spam in the mail header. The subject is changed according to the formatting settings (default).
  • Attachment – An e‑mail identified as spam is attached to a new e‑mail that is marked as spam in the mail header and in the heading according to the formatting settings.
Subject Tag format Define how you want to mark e‑mails that are classified as spam. Enter an individual text to mark the subject of an e‑mail. Use the following variables: %SUBJECT% (original subject of the email), %SPAMCLASS% and %SPAMCLASSNUM% (category). Click to mark the subject of an email according to the default settings (*****SPAM***** [%SUBJECT%]).
Mail Lists To create a blacklist and/or a whitelist, add any amount of e‑mail addresses to the respective list. You can apply both lists at the same time. You can add e‑mail addresses to both lists.
  • To add e‑mail addresses manually, enter an e‑mail address into the input field and click Add.
  • You can also import email addresses from a text file. On the respective list, click Import and open the desired file. By default, the maximum size of an import file is 1 Megabyte. Every line that is not empty adds an entry to the respective list.
To export an address list to your local disk as a text file, click Export below the list. For more information, see Icons and buttons.
Note: In every address list, you can add the following placeholders: * for words, ? for single characters.

If you have modified these settings, use the buttons at the bottom right of the editor panel to confirm (Save) or to discard your changes (Reset). Otherwise, you can close the dialog (Close).

Click Activate in the toolbar at the top of the desktop to apply your configuration changes.

Important:

The antispam settings for the e‑mail protocol only apply to traffic that corresponds to a rule of a proxy for the current protocol. Additionally, you have to activate the proxy as described in Mail Filter Settings.

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