Email Security Settings in Outlook

This section describes email security settings in MS Office Outlook that control adding encryption and digital signature to outgoing email messages.

To understand how to use digital signature and encryption in Outlook 2007, I reviewed the E-mail Security settings.

1a. Run Outlook 2013 and click "File > Options > Trust Center > Trust Center Settings... >". The "Trust Center" dialog box shows up.

1b. Run Outlook 2007 and click "Tools > Trust Center". The "Trust Center" dialog box shows up.

2. Click "E-mail Security" tab. Following settings shows up:

Encrypted e-mail
[ ] Encrypt contents and attachments for outgoing messages
[x] Add digital signatures to outgoing messages
[x] Send clear text signed message when sending signed messages
[ ] Request S/MIME receipt for all S/MIME signed messages
    [Settings...]

Digital IDs (Certificates)
    Digital IDs or Certificates are documents that allow you to prove
    your identity in electronic transactions.
    [Publish to GAL...] [Import/Export...] [Get a Digital ID...]

Read as Plain Text
[ ] Read all standard mail in plain text

...

The first 2 settings confirm that Outlook can encrypt outgoing messages. It can also add digital signatures to outgoing messages. See the picture below:

Outlook Email Security Settings
Outlook Email Security Settings

Table of Contents

 About This Book

 Introduction of PKI (Public Key Infrastructure)

 Introduction of HTTPS (Hypertext Transfer Protocol Secure)

 Using HTTPS with Google Chrome

 Using HTTPS with Mozilla Firefox

 HTTPS with Microsoft Edge

 Using HTTPS with Apple Safari

 HTTPS with IE (Internet Explorer)

 Android and Server Certificate

 iPhone and Server Certificate

 Windows Certificate Stores and Console

 RDP (Remote Desktop Protocol) and Server Certificate

 macOS Certificate Stores and Keychain Access

 Perl Scripts Communicating with HTTPS Servers

 PHP Scripts Communicating with HTTPS Servers

 Java Programs Communicating with HTTPS Servers

 .NET Programs Communicating with HTTPS Servers

 CAcert.org - Root CA Offering Free Certificates

 PKI CA Administration - Issuing Certificates

 Comodo Free Personal Certificate

 Digital Signature - Microsoft Word

 Digital Signature - OpenOffice.org 3

S/MIME and Email Security

 What Is S/MIME

 Digital Signature Scheme for Email Messages

 A Simple Email Message Example

 Email Messages with Attachments using MIME

 Email Messages with Digital Signatures using S/MIME

 Encrypted Email Messages using S/MIME

 Digital Signature and Encryption in Outlook

Email Security Settings in Outlook

 Valid Certificate Required in Outlook

 Message Security Properties in Outlook 2007

 Firefox Extension - Gmail S/MIME

 PKI (Public Key Infrastructure) Terminology

 Outdated Tutorials

 References

 Full Version in PDF/EPUB