To remove that default trust a file can be used with, use the IP Office Trusted Certificate Store delete feature:
Create a text file with an extension '.pem', open and copy the above PEM data including the 'BEGIN CERTIFICATE' and 'END CERTIFICATE' lines. The line termination can be Windows or Linux.
One .pem, file per certificate
Using the IP Office or IP Office Web Manager File Manager feature, copy the file to the system/primary/certificates/tcs/delete directory
Restart IP Office
To add a default trusted certificate, the above steps can be followed, but copy the file to the system/primary/certificates/tcs/add directory
The default certificate feature also supports the binary DER format; see Certificates and Trust for more information on certificate file formats.
