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Checking the Certificate Valid Period

The validity period of a certificate used with S/MIME is verified when you send e-mail.

You can change the timing at which the valid period is checked.

Operation mode

Description

Security Priority

The validity period is verified at the following timings:

User Certificate

(a) When the address is selected

(b) When the [Start] key is pressed

Device certificate

(c) When the first address is selected

(d) When the [Start] key is pressed

Performance Priority

Performing (b) and (c) are omitted.

It may take longer to verify the validity period if the address is selected or the [Start] key is pressed. To shorten the time, select "Performance Priority".

1Log in as the network administrator from Web Image Monitor.

2Point to [Device Management], and then click [Configuration].

3Click [S/MIME] under "Security".

4In "Operation Mode", select [Security Priority] or [Performance Priority].

5Click [OK].

6Log out.

Note

  • If a certificate was valid when transmitted but has expired before the e-mail is retrieved from the mail server to the client computer, the e-mail may not be retrieved.

  • If an error occurs outside the validity period of the certificate when an S/MIME e-mail is sent automatically using Memory Transmission or at a specified time, the error will be reported by plaintext e-mail to the e-mail address of the sender or administrator. The error details can be viewed in the job log. When using S/MIME, be sure to enable the job log collection function. For details about viewing the logs, see Managing Log Files.