Mail.app: S/Mime encrypted attachments do not work under MacOS Sierra

Hello

I can't send or receive attachments when messages are encrypted with S/Mime since the upgrade to Sierra. Attachments sent and received on a MacOS-El-Capitan is available on El Capitan. But the same messages with attachments is more available on Sierra, as well as new messages with attachments sent from Sierra can be viewed on El Capitan or Sierra. Looks like the handling of encrypted attachments is completely screwed.

The indication for messages with encryption and signature is still flaky and is not consistent.

The indications for encryption and signing is a bug for years. What is interested in someone at Apple Mail.app and S/Mime? It doesn't seem a Herculean task to do things, and it is a core feature.

Thank you

iMac MacOS 10.12

Mailing address:

Version: 10.0

Obtained from: Apple

Last modified: 30/08/2016, 05:53

Kind: Intel

64-bit (Intel): Yes

Signed by: signature, CA software, certificate authority root signing of Code Apple Apple

Location: /Applications/Mail.app

S/Mime, workstation is version 9.3.

I have the same problem see my post on the import of attachments.

Mail attachments disappeared with Sierra

Tags: Mac OS & System Software

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