Skip header

E-mail Encryption

For security, this machine can apply encryption and/or digital signatures to the e-mail it receives for forwarding and routing.

Use of encryption and/or digital signatures helps prevent e-mail spoofing and information leakage.

Encryption and digital signatures can be used with the following functions:


  • First register the forwarding/routing destinations' e-mail addresses in the Address Book, and then specify the encryption settings in both Address Book and Web Image Monitor for each destination that you want to send encrypted e-mail to. For details about these settings, ask your administrator.

  • E-mail encryption and digital signatures are not available with standard transmission to Internet Fax destinations. Encryption is only available for forwarding, routing, or transferring to Internet Fax destinations.


  • The encryption method of this machine is S/MIME. For details about S/MIME, ask the administrator.

  • If you specify “Encrypt All” in Web Image Monitor's Address Book settings, all e-mail is forwarded and routed in encrypted form, regardless of the encryption settings specified on the Facsimile Features menu.

  • If you specify “Use Signatures” in Web Image Monitor's security settings, all e-mail is forwarded and routed with digital signatures applied, regardless of the digital signature settings specified on the Facsimile Features menu.

  • Encrypted e-mail cannot be broadcasted. When specifying multiple destinations, broadcasted documents are sent one by one in the order in which the destinations were specified.

  • This machine cannot receive e-mails encrypted with S/MIME. When configuring the S/MIME encryption settings, you should confirm that the receiver can receive S/MIME-encrypted e-mail.

  • For details about how to specify encryption and digital signature settings, see the following:

    • “Forwarding”

    • “SMTP Reception File Delivery Settings”

    • “Special Senders to Treat Differently”

    • “Box Settings”

  • For details about forwarding/routing/transferring functions, see the following:

    • “Routing Received Documents”

    • “Transferring Received Documents”

    • “Forwarding Received Documents”

    • “Routing e-mail received via SMTP”