Cisco Jabber for Mac features a new security enhancement that provides users with a warning dialog in the event that a certificate cannot be validated (due to self-signage, incorrect name or date, or other reasons). As long as the certificate is valid and trusted, the dialog will not appear.
Cisco provides users with the opportunity to "Continue" connecting from the warning dialogs when Cisco Jabber for Mac is deployed into networks with self-signed certificates. Users also have the option to mark the self-signed certificate as "Always Trust," which places the certificate in the user's Keychain and eliminates the warning dialog on subsequent launches.
Users may become frustrated when presented with several warning dialogs when first launching the product, since Cisco Jabber for Mac connects to many servers. In order to resolve this issue and improve the user experience, Cisco recommends that administrators acquire proper certificates that are issued from a trusted Certificate Authority. When Cisco Jabber for Mac is presented with a valid certificate, it will connect normally without prompting the user (unless the user has chosen the option to see certificates before Cisco Jabber for Mac connects).
Alternatively, you can provide self-signed certificates that the user can install on his or her local machine. The user will not encounter the dialog box if the certificates are already in place when Cisco Jabber for Mac launches.
Perform the following steps to deploy self-signed certificates to users: