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S/MIME Communication Settings

To display: [Utility][Administrator Settings][Network Settings][E-Mail Settings][S/MIME Communication Settings]

Configure settings to enable use of S/MIME on this machine. This function enables E-mail encryption and addition of a digital signature, and enhances E-mail security.

Settings

Description

[ON]/[OFF]

Select whether to use S/MIME.

[OFF] is specified by default.

[Digital Signature]

To add digital signature when sending E-mails, select a method to add it.

  • [Do not add signature]: Does not add the signature.

  • [Always add signature]: Always adds the signature. The digital signature is automatically added without performing special setting before sending an E-mail.

  • [Select when sending]: The user must select whether to add digital signature before sending an E-mail.

[Do not add signature] is specified by default.

[E-Mail Text Encryption Method]

Select the method to encrypt the E-mail text.

[3DES] is specified by default.

[Print S/MIME Information]

Select whether to print S/MIME information when this machine receives an S/MIME E-mail.

[No] is specified by default.

[Automatically Obtain Certificates]

Select whether to automatically obtain certificate from the received E-mail.

The obtained certificate is additionally registered in the E-mail address that matches the E-mail address described in the certificate.

[No] is specified by default.

[Certificate Verification Level Settings]

When verifying the obtained certificate while [Automatically Obtain Certificates] is set to [Yes], select an item to be verified.

  • [Expiration Date]: Confirm whether the certificate is within the validity period. [Confirm] is specified by default.

  • [Key Usage]: Confirm whether the certificate is used according to the intended purpose approved by the certificate issuer. [Do Not Confirm] is specified by default.

  • [Chain]: Confirm whether there is a problem in the certificate chain (certificate path). The chain is validated by referencing the external certificates managed on this machine. [Do Not Confirm] is specified by default.

  • [Expiration Date Confirmation]: Confirm whether the certificate has expired. [Do Not Confirm] is specified by default.

[Digital Signature Type]

To add a digital signature when sending E-mails, select its authentication method.

[SHA-1] is specified by default.