Hi! As stated in the subject I could not use my certificate for signing e-mails with s/mime.
I selected my certificate in the mail and account setting. But when I enable signing for an e-mail, I always get the message: "You requested to digitally sign the message, but the application failed to find the signing certificate you specified in your Mail/News accout preferences or the certificate has expired." The certificate is valid until 2003-01-18! It was issued by our company's test CA. So what information (e.g. extensions) need to be present in the certificate? My certificate includes the subjectAltName-extension set to the e-mail address used in my mail account settings. So what did I do wrong? Markus
