How to whitelist Zefort emails for your organization

In the world of ever-evolving cyber threats, having robust email protection is a necessity.  Zefort follows email sending best practices, including SPF, DKIM, and DMARC, so servers receiving emails can be sure they really originated from Zefort.

However, most email servers filter received emails also by their content.  This is necessary to filter out spam, phishing attacks, etc.  Unfortunately, genuine emails are sometimes mistakenly marked as spam. If your organization is a user of Zefort,  you may find our emails ending up in your spam or junk folders.

In this post, we’ll guide you through the steps needed to whitelist Zefort emails, ensuring that important communications and notifications reach your users’ inboxes without hindrance.

Step 1: Identify the domains to whitelist

For many Zefort users, the domains to whitelist are:


However, if you have a private instance and/or a custom domain name in use, you must also include that.

Step 2: Configure your corporate email service to always allow the domains

The process for whitelisting a domain can differ slightly depending on the email system your organization is using. As many of our clients use Microsoft 365, we’ll focus on this platform. If you use a different platform and need guidance, feel free to reach out to us for further instructions.

Microsoft 365 Admin Center

  1. Sign in to the Microsoft 365 Admin Center using your admin account credentials.
  2. In the admin center, navigate to ‘Admin centers‘ > ‘Exchange‘.
  3. This will bring up the Exchange admin center. From there, navigate to ‘protection‘ > ‘spam filter‘.
  4. In the list of spam filter policies, select the policy you wish to edit and then click on the pencil icon to edit the policy.
  5. Select ‘allow lists‘.
  6. Under ‘Domain allow list‘, click on the ‘+’ button.
  7. In the ‘add domain‘ window that appears, enter ‘‘, ‘‘, and all other domains identified in Step 1.
  8. Click ‘Save’. The domains are now on your allow list.
  9. To ensure the changes take effect, click ‘Save’ again on the spam filter policy page.

By following these steps, you will have successfully whitelisted the domains for all users within your Microsoft 365 environment.