S/MIME Plugin 2.2.0 beta 2

October 6, 2017

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Category: Releases

The S/MIME add-on for WebApp is an easy to use plugin that helps you secure your email with minimal effort. This new beta release introduces new features and improvements primarily aimed at how certificates are handled and verified.

S/MIME enables cross-organization data sharing, and fights against data leakage. It is about exchanging email with an extra layer of trust by using a so-called ‘public key infrastructure’ (PKI). In practice this means that the user ensures the authenticity of the message by adding a digital signature. In addition, encryption can be used to avoid data leakage in case you were to be hit by a ‘man-in-the-middle’ attack. If you want more details about the Kopano S/MIME plugin, have a look at the page about Email Security.

What is new in this version?

The primary goal of this release was to improve our OCSP verification during uploading of a PKCS #12 file and receiving signed e-mails.

Optional OCSP

We have made the OCSP check optional in KSP-149, which means for example when the OCSP revocation server is offline we do not mark the certificate as revoked.
When the certificate is actually revoked, this will still be correctly handled by our plugin.

What else?

We have also made performance improvements and fixed several bugs. The complete list can be found in the changelog.

Where do I get the packages?

You can download this release through the repositories, the portal or directly from the download server (all require authentication). The latest development build of the S/MIME plugin is also available through the community download server! Technical details can be found in the documentation. If you have any feedback on this new release, leave your comments in the forum or send an email to .