Security
WorkCentre 7120/7125 Multifunction Printer
System Administrator Guide
60
S/MIME
Secure/Multipurpose Internet Mail Extensions (S/MIME) is a standard for public key encryption and
signing of email encapsulated in MIME.
Before you begin:
• Enable SSL/TLS. For details, see Secure HTTP and SSL/TLS on page 59.
• If an S/MIME-capable self-signed certificate is not available, install an S/MIME certificate and
all certificates in the certification path (chain of trust) for the S/MIME certificate. The S/MIME
certificate must be in PKCS #12 format, and the email address in the certificate must be the
same as the printer’s email address. For details, see Managing Certificates on page 57.
• Enable S/MIME Communication on the SSL/TLS Settings page. For details, see Secure HTTP and
SSL/TLS on page 59.
Configuring S/MIME Settings
1. In CentreWare IS, click Properties > Security > S/MIME Settings.
2. Under S/MIME Settings, next to Message Digest Algorithm, select SHA1, or MD5.
3. Next to Message Encryption Method, select 3DES, RC2-40, RC2-64, or RC2-128.
4. Next to Certificate Auto Store, select Enabled to allow the printer to automatically store a user’s
digital certificate when the printer receives a digitally signed email.
5. Under E-mail, next to Receive Untrusted E-mail, select Enabled to allow the printer to receive an
email from a user whose digital certificate is not in the printer’s chain of trust, or from a user that
does not have a digital certificate.
6. Next to Digital Signature - Outgoing E-mail, select Select during send, to allow users to
manually choose to sign an outgoing email using the user’s digital signature, or the printer’s
digital signature. Select Always add signature to use the setting specified at the control panel, or
select Do not add signature.
Note: To specify the certificate at the control panel, press the Machine Status button, and touch
the Tools tab. Touch System Settings > Connectivity & Network Setup > Security Settings >
S/MIME Settings. Touch Signing Certificate for E-mail Attachments, and touch Change
Settings. Touch Device Certificate or Smart Card Certificate, and touch Save.
7. Next to Split Encrypted E-mail for Each Recipient, select Enabled to split an encrypted
email addressed to multiple recipients into individual encrypted emails addressed to each
of the recipients.
Note: When an encrypted email is split for each recipient, it will only be sent to recipients with a
valid email address. Print a transmission report to see delivery status. For details see Secure HTTP
and SSL/TLS on page 59
8. Click Apply.
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