Thunderbird cannot detect CA Certificate
Hello, I created a certificate backup that came from the browser and saved it on the desktop. But when I try to import it at Mozilla Thunderbird it says "Certificate Manager can't locate a valid certificate that can be used to digitally sign your messages with an address of <johndoe@gmail.com>"
I also tried manually importing it using "Manage Certificates" but it doesn't detect the CA cert also
I'm using Ubuntu, how do I solve this problem?
All Replies (7)
I also tried manually importing it using "Manage Certificates" but it doesn't detect the CA cert also
I'm not sure what the 'detect the CA cert' part is all about. Can you elaborate?
christ1 said
I also tried manually importing it using "Manage Certificates" but it doesn't detect the CA cert alsoI'm not sure what the 'detect the CA cert' part is all about. Can you elaborate?
When I manually import the cert using the "Manage Certificates" on thunderbird it doesn't appear on the certificates list
What kind of cert, i.e. for what purpose, are you trying to import?
Underneath which tab are you trying to import the cert (Your Certificates, People, Servers, or Authorities)?
If a personal cert for email signing, did you also export the private key along with the cert?
christ1 said
What kind of cert, i.e. for what purpose, are you trying to import? Underneath which tab are you trying to import the cert (Your Certificates, People, Servers, or Authorities)? If a personal cert for email signing, did you also export the private key along with the cert?
I'm using COMODO Free Email Cert
I figured it out now, I tried sending first a Signed Email, how will I know if it's signed or not?
how will I know if it's signed or not?
When a message is signed there's an envelope button on the right in the header area of the message window . Press the button.
Thanks!
The recipient of the email replied to me with a different certificate I tried replying to him with an encrypted message and it says: "Unable to save your message as a draft. You specified encryption for this message, but the application failed to find an encryption certificate"
Is it because I don't trust the certificate yet?
OP started a duplicate topic at https://support.mozilla.org/en-US/questions/1250241
Now the recipient of the email replied to me with a certificate issued by COMODO RSA Client Authentication and Secure Email CA, but it says the Digital Signature is invalid? Why is it invalid?
Then check your Thunderbird certificate store whether you do have the COMODO RSA Client Authentication and Secure Email CA cert underneath 'Authorities'.
I got an error when I try to reply back with a digitally signed and encrypted email: Sending of the message failed. You specified encryption for this message, but the application failed to find an encryption certificate for johndoe@gmail.com
Assuming the certificate for johndoe@gmail.com is your own one, make sure you properly linked it to your account in Thunderbird Account Settings - Security.