Introduction of Anti-Phishing E-mail Server and Temporary Suspension of SFC-CNS Mail Service (Dec. 11)

Shonan Fujisawa ITC will install an anti-phishing email filtering server on Saturday, December 11, 2021, as a countermeasure against the increasing number of phishing mails in recent years. As part of the installation process, SFC-CNS email service will be temporarily suspended.

[Changes due to the introduction of the anti-phishing mail filtering server]

• If an email sent to SFC-CNS is judged as a phishing email by the anti-phishing email server, the email will be discarded.
• Emails to mailing lists will be newly included as part of the spam quarantine service.
• Spam detection when forwarding to an email address outside of CNS:
  • Currently, emails that are forwarded externally will be tagged "[SPAM]" in the subject line and then forwarded. However, email to some domains will be discarded if judged to be spam.
  • After the maintenance is finished, forwarded e-mails will be delivered according to each CNS user's spam policy setting (default setting: spam email will be quarantined). However, email to some domains will be discarded if judged to be spam.

[Temporary suspension of SFC-CNS mail service due to the installation]

Date and time

Saturday, December 11, 2021, 9:30 - 10:30
(Depending on the maintenance progress, the time may be adjusted)

Details of the suspension

SFC-CNS email service will be stopped

Impact 1 (emails delivered to CNS)

Emails to CNS will not be delivered during the operation.
Depending on the sending server's settings, in general, re-delivery is attempted between roughly every several minutes to several hours. E-mails sent to CNS during the maintenance period will be delivered after a delay of several minutes to several hours.

Impact 2 (mail sent from CNS)

Emails sent from CNS mail servers will be delivered after the maintenance work is finished.

Additional remarks

You will be able to check emails delivered before the maintenance as usual, even during the maintenance.