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Outlook wisely does not automatically display/download images embedded in HTML emails.

Is there way to modify this policy site-wide (group policy or something), so everyone will see images that are from a whitelist of domains (think internal domains)?

I am specifically concerned about Exchange 2013 and Outlook 2010/2013, but the answer might apply to other versions.

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  • This is not a good idea. The "domain" you are referring to can be easily spoofed. – Greg Askew May 10 '16 at 10:38
  • You are of course right. – Kjensen May 12 '16 at 17:42
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    Spoofed internal domains should be stopped by your server side spam filter. Preferably using DKIM. – myron-semack May 18 '16 at 19:24
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Outlook will auto download images for addresses in the Safe Senders list. You can push out a Safe Senders list to all clients via Group Policy and/or Registry settings.

https://support.microsoft.com/en-us/kb/2252421

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