Zimbra S/MIME encryption whitepaper

Email messages and attachments can be intercepted as they are sent over the Internet. Many email providers support secure connections for incoming and outgoing email. However, the email protocol has a flaw: it falls-back to unsecure connections if an error happens.

Zimbra supports S/MIME a standard for encryption and signing email. By using S/MIME encryption you can enhance email privacy, so that only intended recipients can read the contents of email and attachments. S/MIME signing works similar to registered mail, if you receive an S/MIME signed email you can know for sure it really came from the person displayed on the screen.

In the Zimbra S/MIME Whitepaper you can learn how S/MIME works, what benefits it brings and how to use it with Zimbra and:

  • iOS mail client
  • Outlook
  • Zimbra Desktop

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2 Responses to Zimbra S/MIME encryption whitepaper

  1. Andras Kovacs September 29, 2022 at 2:20 AM #

    Thanks for the whitepaper! But 15-Dec-2021? Zimbra Desktop became EOL on October 1, 2019 doesn’t it? What kind of sorcery is this?
    IMHO validating s/mime signed emails with Zimbra is a bigger issue now, because the default java trust store is missing root certificates.

    • Avatar photo
      Barry de Graaff September 29, 2022 at 5:39 AM #

      There is a Modern UI Zimbra desktop that is available via the Partner Portal.

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