This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

S/MIME and trusting other certificates

  • 2 uphendule
  • 1 inale nkinga
  • 3 views
  • Igcine ukuphendulwa ngu alan158

alan158
alan158
more options

I am trying to get S/MIME set up properly. I have my personal certificate set up and installed - I can send signed messages. However, when I try to send an ecrypted message to a recipent with a DOD certificate, I run into an error that the certificate is not valid. I have installed the DOD root certificates, trusted them for email/websites, and imported the individual's signature cert into the store.

How do I change the settings / trust on the individual's certificate to trust it? It is within the valid date range.

I am trying to get S/MIME set up properly. I have my personal certificate set up and installed - I can send signed messages. However, when I try to send an ecrypted message to a recipent with a DOD certificate, I run into an error that the certificate is not valid. I have installed the DOD root certificates, trusted them for email/websites, and imported the individual's signature cert into the store. How do I change the settings / trust on the individual's certificate to trust it? It is within the valid date range.

Isisombululo esikhethiwe

I had already installed the DOD root certificates as you had mentioned.

I had to manually go through each DOD certificate and "Edit Trust" to allow them to identify websites and email. That solved the problem.

Funda le mpendulo ngokuhambisana nalesi sihloko 👍 0

All Replies (2)

Matt
Matt
  • Moderator
  • Top 10 Contributor
more options

Generally the issue is missing intermediate certificates. But Personally I think it is funny the supposedly most secure organizations in the world can't meet a public test on their integrity that would see them included in the trusted authorities immediately.

However basically I suggest following the guide for Firefox here https://public.cyber.mil/pki-pke/end-users/getting-started/linux-firefox/

So Step 1 from the web site In Thunderbird open options/ preferences and search for cert then click the Manage Certificates button. The pages are generally the same in Thunderbird and Firefox as Thunderbird uses the same pki code to manage certificates as Firefox. Skip to step 7. from the web site

alan158
alan158 Umnikazi wombuzo
more options

Isisombululo Esikhethiwe

I had already installed the DOD root certificates as you had mentioned.

I had to manually go through each DOD certificate and "Edit Trust" to allow them to identify websites and email. That solved the problem.

Okulungisiwe ngu alan158