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michaellustig-6655 asked michaellustig-6655 commented

Encrypted emails

Hello everyone

How can I send encrypted/secure emails by exchange 2019/ 2016 or outlook 2016?

Thanks

office-exchange-server-administrationoffice-outlook-itpro
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Hi @michaellustig-6655,

Please kindly understand under Outlook tag, we mainly focus on general issues about Outlook desktop client, I noticed that your issue may be more related to the encryption configuration in Exchange, in order to solve it better, I added relevant exchange tag under your post, thanks for your understanding.

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Thanks

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AndyDavid answered ChrisJacobs-5675 commented
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I mean..can I configure some users to be able to send encrypted emails and some not?

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Yes. Only users that have your public key can send you encrypted mails. The public key is sent with your email if you sign it. So only sign emails to users that you want to be able to send encrypted mails to you.

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KaelYao-MSFT answered michaellustig-6655 commented

Hi @michaellustig-6655

Since you are using Exchange, here is a link introducing message encrytion:
S/MIME for message signing and encryption

If you would like to only allow some of the users sending encrypted messages, as Chris suggested, their AD account should have the user certificate published in the attributes UserSMIMECertificate and/or UserCertificate.
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Hi @michaellustig-6655

I am writing here to confirm with you how thing going now?
If you have any questions or needed further help on this issue, please feel free to post back.

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Hi kaelYao

Thanks for your response.

Your suggestion is need trust between domains?

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