Microsoft Exchange Server is a widely used email server that is used with all versions of Microsoft's Outlook, Entourage, IMAP, and POP3 clients. It is also used to host Microsoft's Office 365 cloud offering.

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Exchange of encrypted files through a server

I have a thing to do, that basically bases on a server that is honest but curious. Therefore I want the server to have the public key for encryption and it will encrypt files during the process of ...
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How should an ISP approach Mutual Auth TLS for SMTP email? (Domain Auth Email)

I'm looking for an easy to deploy way to make email clients (MUAs) display my email messages in a secure manner. PGP and SMIME both do this today, but they are high touch, and require software or ...
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Does PKCS #7 (CMS) add assurance to an email if a CRL/OCSP response is included, then revoked?

Suppose I issue a signing certificate in January, and have a daily CRL issued (expires in 1 day) to verify the validity of that signature. Then sometime in July I need to revoke that certificate. My ...
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Can usernames & passwords + client certificates exist in Activesync?

Every Activesync writeup I've seen, by MSFT or 3rd parties seems to encourage the deployment of client certificates with the "require" feature, as opposed to the "Accept/Optional" selection. I want ...
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Are old Android OS's a risk to Activesync email, and how do I block old devices?

I'm concerned that old versions of Android may be hacked through unpatched WebViews (in PhoneGap and other apps), exposing Activesync email data, and other sensitive information. To mitigate this, ...