Firefox, Gmail and S/MIME
Trying to get S/MIME to work on Gmail and Firefox 8:
I've gotten the Penango extension, a Comodo personal certificate, and I can sign messages with S/MIME properly. However, I cannot obtain my correspondents' certificates. I think Penango is supposed to do this automatically when I receive signed messages, but it doesn't seem to be working.
Can someone help me setup Penango properly so that it will register other people's certificates, or perhaps another alternative?