This is how you can send digitally signed mails with Outlook under macOS:


1

To send digitally signed mails, you need

  • your personal certificate and the corresponding password (instructions here)
  • installed Office 365 with Outlook with your Uni Bayreuth mail account set up (instructions here)

2

Open your certificate file (e.g. certs.p12) by double clicking it.

3

A prompt opens, asking if the certificate should be added to your keychain.
Next to Keychain:, select login and click on Add.

4

Afterwards, enter the password for your certificate file. You have defined it during the download of your certificate – it is independent from your Uni Bayreuth user account password!
Click on OK.

5

Your certificate was added to the keychain.
Now, open Outlook and click Tools -> Accounts...

6

In the now appearing window, select your Uni Bayreuth mail account on the left and click Advanced... to the right.

7

Another new window opens.
Open the tab Security up top and configure everything as shown in the screenshot, so:

Under Digital signing:

  • Certificate: Select the certificate you imported at the start of this tutorial. By default, it will display your first and last name.
  • Signing algorithm SHA-256
  • Tick all three checkboxes

Under Encryption:

  • Certificate: Select the certificate you imported at the start of this tutorial. By default, it will display your first and last name.
  • Encryption algorithm: AES-256

Confirm by clicking OK.

8

That's it! From now on, your mails will be sent digitally signed. When composing an email, there should be a banner saying This message will be digitally signed.
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Last update: 23.05.2024 13:08

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