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A pop-up window shows a warning message about a self signed certificate at every start of Outlook on a PC and on Samsung mail at the initial configuration.

Warning about the SSL certificate in Outlook 2016

Where is this certificate stored (Kolab 16 running on Ubuntu 18.04)? And how can I create new one?

Avast Web-Mail Shield self-signed Root certificate english

Philippe
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    Hello and welcome to SO. Could you please provide screenshots in english or if not possible translate them. Also please have a look here: https://stackoverflow.com/help/how-to-ask – Matthias Güntert Oct 03 '19 at 15:20
  • Here is a transtation of the images captures in english. – Philippe Oct 03 '19 at 16:03

1 Answers1

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This certificate is delivered by the Avast antivirus installed on a workstation. This certificate is stored in the workstation, not on the Kolab server.

To change the certificate associated to the warning about the SSL certificate in Outlook, you have to modify /etc/guam/sys.config and restart guam on the Kolab server :

1) At the line 29/79 of the file, you change the file path and the name of the certificate assiciated to the desired file.

2) At the line 46/79 of the file, you change the file path and the name of the certificate assiciated to the desired file.

3) And for a plus, you can modify the port 9993 at the line 10/79 for the port number 993 witch will correct a bug in the default file.

4) Restart the guam service by typing : service guam restart

  • The original certificate file /etc/ssl/kolab.installation.lan/cyrus-imapd.pem concactenates a certificate and a private key. So you can do the same with a command like : cat fullchain.pem privkey.pem > crtprivkey.pem
Philippe
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