Owa | Domain.txt

Are you trying to in Microsoft 365, or are you troubleshooting attachment security on a local server? EnableDownloadDomains blocks picures in OWA

: Use the Exchange Management Shell to set the download hostnames: powershell owa domain.txt

If you are managing an on-premises Exchange Server, "Download Domains" are used to isolate attachments and inline images for security (preventing script execution in OWA). Are you trying to in Microsoft 365, or

: Enter your custom domain name (e.g., yourcompany.com ) and select Use this domain . Verification Method : Verification Method : : Create a new DNS

: Create a new DNS record for a subdomain like attachments.yourdomain.com .

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)

Add a TXT record to your DNS settings (e.g., at GoDaddy or Namecheap) using the value provided by Microsoft (e.g., MS=msXXXXXXXX ).