After installing a device certificate to the machine, configure the conditions for S/MIME signatures. The configuration procedure is the same regardless of whether you are using a self-signed certificate or a certificate issued by a certificate authority.
Log in as the network administrator from Web Image Monitor.
Point to [Device Management], and then click [Configuration].
Click [S/MIME] under "Security".
Select the digest algorithm to be used in the electronic signature next to "Digest Algorithm" under "Signature".
Select the method for attaching the electronic signature when sending e-mail from the scanner next to "When Sending Email by Scanner" under "Signature".
Select the method for attaching the electronic signature when forwarding stored documents next to "When Transferring Files Stored in Document Server (Utility)" under "Signature".
Click [OK].
The settings for the S/MIME electronic signature are enabled.
Log out.
Configure the settings based on the encryption algorithm and digest algorithm supported by the user's e-mail software.