The reasons for the above error might be:
- 1. The web server used :
The IIS for example, allows self-created exclusively CSR. If you used an external generator to create your CSR , this can lead to errors.
To solve the problem: Please create a new CSR directly on your web server and send the new CSR unformatted by e -mail. We create the certificate with the transmitted CSR happy to help you relocate .
This service is free of charge .
- 2 An incorrect CSR / Private Key Pair .
When used in connection with the IMAPd please check whether the IMAPd has the permissions to access the certificates / keys.
- 3. errors in the transmission of the CSR / Private Key
Sometimes it may happen that the file when transferring Windows is "destroyed" to UNIX since WIN uses a different formatting.
Please check in binary mode if the rows in the CRT / private key end with a ^ M . This error can be fix with the dos2unix command .