S/MIME sending issue
I've finished setting up the S/MIME encryption in Thunderbird, and imported all the certificates needed. When people with the certificates emailed me, I could receive and… (続きを読む)
I've finished setting up the S/MIME encryption in Thunderbird, and imported all the certificates needed. When people with the certificates emailed me, I could receive and read all the emails. However, when I replied to the same people, I got the error message saying 'End-to-end encryption requires resolving cerficiate issues'. My colleagues imported the same certificates without any issues. Do you have any suggestions for me to solve the issue? Thank you very much!