![]() Thank you to all of the contributors who created this content and to MozillaZine for sharing this information.We use cookies and similar tools that are necessary to enable you to make purchases, to enhance your shopping experiences and to provide our services, as detailed in our Cookie Notice. This article includes content contributed by the MozillaZine Knowledge Base. Click the Select button under Digital Signing.Ĭompose a message, and from the Options menu select Security > Digitally Sign This Message.Repeat this process for the Sectigo RSA Client Authentication and Secure Email CA. Note that Comodo is now called Sectigo, so in the screenshots below, please select the Sectigo equivalent. Select Sectigo RSA Certification Authority and then click the Edit Trust. button. *** If you wish to digitally sign every message, please select the option "Digitally Sign Messages (by default)"ħ) Click "OK" to exit the "Account Settings" window.Ĩ) Go to Postbox > Preferences (Mac) or Options (Windows) > Advanced > Certificates > View Certificates > Authorities. p12 file.ġ) Inside Postbox go to "Tools menu > Options > Accounts > your email account > Security > Manage Certificates to load the Postbox Certificate Manager.Ģ) Click "Import" and supply the password you created above.ĥ) Select your certificate from the drop-down menu and click "OK" when finished.Ħ) Perform the above step for Digital Signing. * File Name: email address Ex: would become support_sectigo_comħ) Provide a password for your. ![]() Do not close the window!ģ) A message will be displayed that your certificate was installed successfully.ġ) Inside Firefox go to Tools -> Options (Windows), Edit -> OptionsĢ) Then go to Advanced -> General -> Encryption and click on "View Certificates".ģ) Select the tab that says "Personal" or "Your Certificates".Ĥ) Highlight the certificate that expires 1 year from when you applied for your certificate.ĥ) Once highlighted select the button that says "Backup".Ħ) Next, one should be prompted to save the file. On Windows, you will install the certificates using a browser by loading a URL.īe sure to use the correct browser for key generation, we highly recommend using Firefox.ġ) In the confirmation email that you receive cut and paste the URL into Firefox, then enter the password given.Ģ) You will see a message stating that your certificate is being installed. You can also use the same certificate for S/MIME Encryption is desired.Ĭompose a message, and from the Options menu select Digitally Sign This Message.įill out the Application for Secure Email Certificate and you will be emailed the instructions. Click the Select button under Digital Signing and select your certificate.Go to Postbox > Preferences (Mac) or Options (Windows) > Accounts > > Security.Once you have imported your certificate into Postbox, it will be available for pairing with one or more accounts in Postbox. In the pop-up dialog please select all of the checkboxes and click OK. Select the Sectigo RSA Client Authentication and Secure Email CA.cer file that you saved to your Desktop for import.Next go to: Postbox > Preferences > Advanced > Certificates > Manage Certificates > Authorities > Import.You will be prompted for the password you used when you exported (or backed up) the file. Postbox > Preferences > Advanced > Certificates > Manage Certificates > Your Certificates > Import. ![]() The file format should be Personal Information Exchange (.p12).
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