[ON]

Uses S/MIME communication.

The digital signature function is only available for S/MIME communication. The encryption function is not available.

To select [ON], the administrator email address set in [Administrator Registration] and the email address set when creating the certificate bust be the same. For details about the administrator's email address, refer to [Administrator Registration].

[OFF]

Does not use S/MIME.

[Digital Signature]

[Do not add signature]

Does not add a digital signature for S/MIME communication.

[Always add signature]

Adds digital signature.

Use the RSA certificate for S/MIME signature.

[Digital Signature Type]

[SHA-1]

Select the digital signature format used for S/MIME communication.

[SHA-256]