How to Configure DKIM (Bitdefender Email Security)

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How to Configure DKIM (Email Security)

DomainKeys Identified Mail (DKIM) adds a digital signature to safeguard the email content of your outbound source. Configuring DKIM increases your domain reputation with different providers.

Single Domain DKIM

To enable DKIM, you need to add a custom rule data, configure a message rule, set rule priority and disable the default rule. Use the following procedure to enable DKIM:

Adding Rule Data

Add a custom rule data to add the DKIM entry to your message rule.

  1. Log in to Control Center.
  2. Go to the Email Security page.
  3. Click Open console.
    If you do not have an account, click Create account and wait for the provisioning to be completed.
  4. Navigate to Products > Email Security > Custom Rule Data.
  5. Click New at the bottom of the Custom Rule Data column.
  6. Enter a name, such as DKIM Signing.
  7. Click Update.
  8. Under Value, add specific domains for which you would like to enable DKIM.
    Keep each domain as a separate line.
  9. Click Save.
    A window appears with your domain’s DKIM key (public key).

Adding Message Rule

Add a message rule using the Rule Builder.

  1. Navigate to Product > Email Security > Message Rules.
  2. Click Add Rule at the upper-right corner.
  3. Enter a name such as Apply DKIM Signing and select Add.
    The Rule Builder appears.
  4. Set Active settings by toggling the On/Off button.
    The message rule is active by default.
  5. Add a description to the message rule.
  6. In the Conditions panel, select the Direction card then drag and drop it in the Selected Conditions column.
  7. Click Configure within the selected Condition card.
    The configuration window appears.
  8. Select Outbound from the Condition Value dropdown list and Save changes.
  9. In the Conditions panel, select DKIM Enabled then drag and drop it in the Selected Conditions column.
  10. Configure DKIM Enabled as follows:
    1. Match Type to Matches.
    2. Condition Value to True.
    3. Save changes.
  11. In the Conditions panel, select Sender then drag and drop it in the Selected Conditions column.
  12. Configure Sender as follows
    1. Match Type to Matches.
    2. Condition Value to DKIM Signing (your Custom Rule Data).
    3. Save changes.
  13. In the Actions panel, select DKIM Signing then drag and drop it in the Selected Actions column.
  14. Configure DKIM Signing as follows:
    1. Condition Value to 1024-bit key(your Custom Rule Data)
    2. Save changes.
  15. Click Save at the upper-right corner of the window.

Setting Rule Priority

Set your rule at the top of the message rules list, as rules are processed in priority order.

  1. Navigate to Product > Email Security > Message Rules.
  2. Find Apply DKIM Signing, or the name given to your message rule.
  3. Click anywhere within the listed entry and drag it to the top of the list.
    This will set your Apply DKIM Signing message rule to 1st priority.

Disabling Default Rule

The message rules engine comes with default rules. You will need to switch off the (Default) Apply DKIM signing rule to use your DKIM message rule.

  1. Navigate to Product > Email Security > Message Rules.
  2. Toggle View System Rules at the top of the page.
  3. Find (Default) Apply DKIM signing in the list and click On under the Active column.
    A confirmation window appears.
  4. Click Yes to confirm your action.
    Your DKIM message rule is enabled for your domains specified in the customer rule.