Unsolicited Bulk Email Policy

Asahi Net Inc. believes that unsolicited bulk email (spam) is detrimental to the healthy development of the Internet community and is taking countermeasures against unsolicited email to protect the enjoyment of those using the Internet.

Definition of Unsolicited Bulk Email

Asahi Net considers the following emails listed below to be unsolicited bulk email.

  • Emails received without prior consent containing advertisements, propaganda or solicitations.
  • Emails soliciting the receiver to join pyramid schemes.
  • Emails promoting the spread of false rumors (chain letters).
  • Emails making groundless claims for money.
  • Phishing emails trying to extract personal information from the receiver.
  • Emails transmitted in large quantities that causes excessive burden to Asahi Net's systems or those of a third party.
  • Malicious emails sent from spoofed email addresses masquerading as another person's email address.
  • Malicious emails sent from spoofed email addresses masquerading as an invalid email address.
  • Other types of emails which cause a feeling of discomfort in the receiver.


In compliance with the stipulations on preserving the secrecy of communications and prohibition of censorship based on the Telecommunications Business Act, the following measures shall be implemented to reduce the amount of unsolicited bulk email.

Blocking of Email Determined by the Member to be Unwanted

Asahi Net offers the Spam Filtering Service which can be used to block unwanted emails.

Blocking the Receipt of Bulk Email

In the event Asahi Net's mail server receives bulk email from the same sender in a short period of time, Asahi Net may block the receipt of such bulk email from said sender temporarily or for a fixed period of time.

Prohibition of Sending Unsolicited Email

Asahi Net Individual Member Service Agreement and Asahi Net Business Service User Agreement both prohibit the sending of unsolicited email. In the event a member is found to be sending unsolicited email, Asahi Net may suspend the use of service of said member, cancel membership of said member, etc.

Blocking Receipt of Emails Sent from Senders with Invalid Domain Addresses

The domain name of the sender's email address is inspected when an email is received.
Emails are blocked when they are sent from senders with non-existent domain names.

Outbound Port 25 Blocking (Implemented since November 2006)

Outbound Port 25 Blocking is a measure to prevent the intentional or unintentional sending of bulk unsolicited email by spammers or those infected by computer viruses without the use of the internet service provider's outgoing email server.

Supplementary Provision
This policy shall be effective as of September 2006.
The revised policy shall be effective as of November 13, 2008.

  • *This is a translation of the original Unsolicited Bulk Email Policy in Japanese. If there is any conflict between the original and the translation, the original shall prevail.

Asahi Net, Inc.

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