Mastering DomainKeys Identified Mail (DKIM): A Step-by-Step Guide 

Mastering DomainKeys Identified Mail (DKIM): A Step-by-Step Guide 

DomainKeys Identified Mail (DKIM) is an email authentication method designed to detect forged sender addresses in emails, a technique often used in phishing and email spam. In simpler terms, DKIM is a digital signature for your emails, ensuring they are from you and haven’t been tampered with en route. This blog will guide you through editing DKIM settings in some significant hosts/registrars.

Understanding DKIM

Before we dive into the settings, it’s essential to understand the basics of DKIM. When you set up DKIM, you create a public and private key pair. Your email server keeps The private key secret while the public key is published in your DNS records. The private key ‘signs’ the message when an email is sent. On the receiving end, the public key is used to verify that the signature is valid.

Editing DKIM Settings in Major Hosts/Registrars

  • GoDaddy
    • Log into your GoDaddy Domain Control Center.
    • Select your domain to access the Domain Settings page.
    • Under ‘Additional Settings,’ find and click on ‘Manage DNS.’
    • On the DNS Management page, scroll down to find the option to add a new record.
    • Select ‘TXT’ as the type of record.
    • In the TXT Value field, enter your DKIM record (provided by your email service).
    • Save the changes.
  • Bluehost
    • Access the Bluehost control panel and navigate to the ‘Domains’ section.
    • Choose the domain you wish to modify.
    • Locate the ‘DNS Zone Editor’ under the domain settings.
    • Add a new TXT record with your DKIM value.
    • Ensure the record is saved correctly.
  • HostGator
    • Sign in to your HostGator cPanel.
    • Find the ‘Domains’ section and select ‘Zone Editor’.
    • Click on ‘Manage’ next to the domain you’re configuring.
    • Add a TXT record and input your DKIM details in the required fields.
    • Save your new DNS settings.
  • Namecheap
    • Log into your Namecheap account dashboard.
    • Select ‘Domain List’ from the left sidebar and click ‘Manage’ next to your domain.
    • Go to the ‘Advanced DNS’ tab.
    • Add a new TXT record for DK

IM by clicking on the ‘Add New Record’ button.

  • Fill in the Host and Value fields with the appropriate DKIM information.
  • Save the changes to update your DNS records.
  • Google Domains
    • Sign in to Google Domains.
    • Select the name of your domain.
    • Open the menu if it’s not already open and click ‘DNS.’
    • Scroll to ‘Custom resource records’.
    • Add a new TXT record, entering your DKIM details into the appropriate fields.
    • Click ‘Add’ to save the record.

Tips for Setting Up DKIM

  • Verify Record Syntax: Ensure the DKIM record is entered correctly. A small error can make the record invalid.
  • Check Propagation Time: DNS changes can take up to 48 hours to propagate globally, so be patient.
  • Use DKIM Checker Tools: After updating your DNS records, use online DKIM checker tools to verify that your DKIM record is correctly published.

The Importance of DKIM

Implementing DKIM is crucial for several reasons:

  • Increases Email Deliverability: Emails are less likely to be marked as spam if they are DKIM-signed.
  • Protects Brand Reputation: Prevents spammers from sending emails with your domain, which can harm your reputation.
  • Enhances Email Security: Adds an extra layer of verification to your email, making it more secure.


Setting up DKIM is an essential step in securing your email communications and maintaining the integrity of your brand. By following the steps outlined above for your specific host/registrar, you can ensure that your emails are authenticated and trusted by recipients’ servers. Remember, in the constantly evolving digital landscape, staying proactive about your email security is not just a recommendation; it’s a necessity.

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