: Send an email with an inline image to an OWA user. Right-click the image and select Copy Image link —it should point to your new download domain. Summary of DNS Record Values Record Type Host / Name TXT @ or blank MS=msXXXXXXXX Verify Domain Ownership CNAME owa mail.domain.com Alias for easier OWA access
: Create a new DNS record for a subdomain like attachments.yourdomain.com . owa domain.txt
: Navigate to the Microsoft 365 Admin Center under Settings > Domains . : Send an email with an inline image to an OWA user
Download the specific domain.txt file provided in the setup wizard and upload it to the root folder of your website via FTP. Confirm : Return to the admin center and click Verify . 2. Configuring Download Domains (Security) : Navigate to the Microsoft 365 Admin Center
Set-OrganizationConfig -DownloadDomains @{Add="attachments.yourdomain.com"} Use code with caution.
: Enter your custom domain name (e.g., yourcompany.com ) and select Use this domain . Verification Method :