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S/MIME

To display: [Utility][Administrator][Network][E-mail Setting][S/MIME]

If S/MIME is installed in your environment, configure settings to use S/MIME.

Setting

Description

[S/MIME Comm.Setting]

When using S/MIME, set this option to ON (default: OFF).

To set to ON, the E-mail address of the certificate of this machine must match the E-mail address of the administrator.

[Digital Signature]

To add digital signature when sending E-mails, select a method to add it (default: [Do not add signature]).

  • [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.

[Digital Signature Type]

To add a digital signature when sending E-mails, select its authentication method (default: [SHA-1]).

[E-Mail Text Encrypt. Method]

Select the method to encrypt the E-mail text (default: [3DES]).

[Automatically Obtain Certificates]

Select whether to automatically obtain the digital signature (user certificate) from the E-mail received on this machine (default: [OFF]).

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

[Print S/MIME information]

Select whether to print S/MIME information when this machine receives an S/MIME E-mail (default: [OFF]).

[Certificate Verification Level Settings]

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

  • [Expiration Date]: Confirm whether the certificate is within the validity period (default: ON).

  • [Key Usage]: Confirm whether the certificate is used according to the intended purpose approved by the certificate issuer (default: OFF).

  • [Chain]: Confirm whether there is a problem in the certificate chain (certificate path) (default: OFF). The chain is validated by referencing the external certificates managed on this machine.

  • [Expiration Date Confirmation]: Confirm whether the certificate has expired (default: OFF). The expiration date confirmation is performed in the order of OCSP (Online Certificate Status Protocol) service, and CRL (Certificate Revocation List).