Hello,
One of the recipient is not able to decrypt the emails I send him using his public key.
I use gpgOL(Kleopatra) to encrypt emails, while he is using “Symantec Desktop Encryption” at his side for deception.
He is just able see a blank email with an attachment called ‘GpgOL_MIME_structure.txt’ . Email screenshot attached for reference
can anyone please help me fix this issue?
when you open the settings → GpgOL there is a section probably called “General” and the fourth option enables PGP/Inline. Maybe Symantec Desktop Encryption does not support PGP/MIME so you could try to activate this option and then send an email.
Trying the deprecated no-mime format is worth a try to see if this changes anything.
As far as I know Broadcom’s Symantec dies support OpenPGP/MIME.
The other possibility is that you’ve created a default keypair with the new algorithms
using elliptic curve cryptography (ECC) and your communication partner’s cannot deal with it. To check, see the detailed properties of your keypair. Try with an RSA 4096bit keypair, if you run in this problem of backwards compatibility.
What happens if you try to send emails with attachments?
Have you tried a different key like Bernhard suggested? I remember that I created a key with Gpg4win (a version after the default key type was changed) for testing purposes and couldn’t import it in Thunderbird. So that could be a cause for that problem.