{"id":42740,"date":"2024-10-14T10:07:10","date_gmt":"2024-10-14T10:07:10","guid":{"rendered":"https:\/\/easydmarc.com\/blog\/?p=42740"},"modified":"2025-08-12T15:12:58","modified_gmt":"2025-08-12T15:12:58","slug":"setting-up-dkim-for-exchange-server","status":"publish","type":"post","link":"https:\/\/easydmarc.com\/blog\/setting-up-dkim-for-exchange-server\/","title":{"rendered":"Setting up DKIM for Exchange Server"},"content":{"rendered":"\n

DKIM (DomainKeys Identified Mail)<\/a> is an email security standard that ensures messages haven’t been altered in transit. It uses public-key cryptography to sign emails with a private key on the sending server. Recipient servers verify the signature with a public key published in the sender’s DNS.<\/p>\n\n\n\n

Exchange DKIM Signer is an open-source, easy-to-install DKIM Signing Agent for Microsoft Exchange Server. It includes support for Exchange Server 2007 through 2019.<\/p>\n\n\n\n

To begin configuring DKIM on your Exchange server, comply with the steps listed below:<\/p>\n\n\n\n

Installing Exchange DKIM Signer<\/strong><\/p>\n\n\n\n

    \n
  1. Download the latest GUI package from GitHub<\/a>.<\/li>\n\n\n\n
  2. Extract and run Configuration.DkimSigner.exe.<\/li>\n\n\n\n
  3. Click Install and then Close when finished.<\/li>\n\n\n\n
  4. Once the installer has completed, click Close.<\/li>\n<\/ol>\n\n\n\n
    \n
    Start free trial<\/a><\/div>\n<\/div>\n\n\n\n

    Configuration<\/strong><\/p>\n\n\n\n

    Important Note: Make sure when you’re logging into your exchange server, you have permission to access the path you’ve chosen to store your keys. Otherwise, you’ll receive <\/strong>access denied errors<\/em><\/strong>. Furthermore, DKIM signing of outgoing mail will fail.<\/strong><\/p>\n\n\n\n

      \n
    1. Open Configuration.DkimSigner.exe from “C:\\Program Files\\Exchange DkimSigner\\”. 2.<\/li>\n\n\n\n
    2. In the DKIM Settings tab, make sure to choose Relaxed<\/strong> on both header\/body sections shown below.<\/li>\n\n\n\n
    3. Click on Save configuration.<\/li>\n\n\n\n
    4. Click Add from the bottom-left of the Domain Settings tab, and then select Yes to create a new DKIM record.<\/li>\n\n\n\n
    5. Enter your domain name in Domain name box and your customized selector name in Selector box, then generate a new key. <\/li>\n<\/ol>\n\n\n\n

      Note: DKIM Signer will then generate new public and private DKIM signing keys based on your chosen domain and selector.<\/strong><\/p>\n\n\n\n

      6. Save the generated key (.pem file) in C:\\Program Files\\Exchange DkimSigner\\keys and click Save.<\/p>\n\n\n\n

      Note: You can save in a different location, but the DKIM Signer recommends you store it in the default location.<\/strong><\/p>\n\n\n\n

      7. Copy the Suggested DNS name value.<\/p>\n\n\n\n

      8. Head to your DNS zone (in our case, the DNS zone is Cloudflare).<\/p>\n\n\n\n

      9. Publish the DKIM TXT record on your DNS zone based on the information copied.<\/p>\n\n\n\n

      Name: Use the Suggested DNS Name.<\/p>\n\n\n\n

      Content: Use the Suggested DNS Record.<\/p>\n\n\n\n

      10. Save the record<\/p>\n\n\n\n

      Important Note: The DKIM record may take up to 48 hours to be recognized and identified in the DNS level.<\/strong><\/p>\n\n\n\n

      11. Check the DNS record in the DKIM Signer Domain Settings tab and click Save domain.<\/p>\n\n\n\n

      12. Navigate to the Information tab and select Restart to bring the Exchange Transport Service back online.<\/p>\n\n\n\n

      Congratulations! You have now set up DKIM for the Exchange Server on your domain.<\/p>\n","protected":false},"excerpt":{"rendered":"

      DKIM (DomainKeys Identified Mail) is an email security …<\/p>\n","protected":false},"author":1,"featured_media":42742,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-42740","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nSetting up DKIM for Exchange Server | EasyDMARC<\/title>\n<meta name=\"description\" content=\"Guide to setting up DKIM on Microsoft Exchange Server using Exchange DKIM Signer for enhanced email security\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/easydmarc.com\/blog\/setting-up-dkim-for-exchange-server\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" 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