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How to Prevent Email Spoofing in Exchange

Cybercriminals (like spammers and phishers) like to hide behind other people’s domain names via email spoofing – forging an email header to make it look like it’s coming from you and not them. When your Domain is SPF-protected, the system automatically conducts an email authentication protocol each time your domain is used for sending emails. When an unauthorised mail server or IP address uses your domain, it fails SPF authentication and will not deliver the emails.

The SPF, or Sender Policy Framework, is a system that allows you to specify mail servers and IP addresses that are authorised to send mail using your domain/s. It’s the most basic requirement that mail servers use for preliminary spam checking. But, how exactly does it work?

To protect your domain, you can manually add our SPF Record as a TXT Record.

Type Record
SPF/TXT v=spf1 +a +mx ~all

Adding SPF on Exchange Manager

Follow the steps below on how to add the SPF record to your Exchange Manager. The steps herein apply if the name servers of your domain name are and Otherwise, contact your domain registrar to add these changes.

Note: The steps herein are for Aust Domains Exchange plans. If you have other email hosting plans, follow the steps on how to avoid email spoofing via cPanel.

Step 1. Log in to your Exchange Manager.

Step 2. Under System, click on the Domains icon.

Domains Button in Exchange Manager

Step 3. Select the Domain Name you wish to manage.

Select Domain Name to Manage DNS in Exchange Manager

Step 4. Click the Edit DNS Zone Records button. Your TXT and other records should appear on the next page.

Edit DNS Zone Records Button

Step 5. Click the Pencil Icon corresponding to your TXT Record, enter the correct data, and click Save.

Edit TXT Record in Exchange Manager

If there is no TXT Record, click Add Record, select TXT from the drop-down list under Record Type, enter the correct data, and click Save.

Add Record Button in Exchange Manager

Allow at least 2 – 4 hours propagation time for the whole internet to cache the information.

Feel free to contact our 24/7 Singaporeor AustraliaSupport Team if you have further questions. 

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Updated on April 28, 2021

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