News & Announcements
Important: Please update your email settings due to the end of support for select authentication methods (Updated on September 28, 2026)
Asahi Net, Inc.
Thank you for using Asahi Net.
To enhance the security of Asahi Net’s email services, we will end support for certain authentication methods on October 20, 2026.
If you do not update the settings by the end-of-support date (October 20, 2026), you will no longer be able to send or receive emails after this date.
If you are using an affected authentication method, please refer to the Setup Guide below and update your mailer settings by the end-of-support date.
- *Asahi Net will also contact the affected members separately by email.
We apologize for the inconvenience this may cause and appreciate your understanding and cooperation.
1. End-of-support authentication methods
- Sending email with CRAM-MD5 (MD5-Challenge authentication)
- Receiving email with APOP
- *The support ends for APOP and not POP. POP will continue to be available.
2. End-of-support date
October 20, 2026
3. Affected mail services
Affected services are as follows:
- Mail Service
- MyMail Service
- Additional Mailbox Service
4. What you need to do by the end-of-support date
Please check your mailer settings
In your mailer’s settings, if the password authentication method is set to “暗号化されたパスワード (= Encrypted password)”, “CRAM-MD5 (MD5 Challenge-Response)”, or “APOP”, you need to change it to “通常のパスワード (= Normal password)” or “Password”.
Please refer to the setup guide of your mailer and update your settings accordingly.
| Mailer | Setup Guide | What needs to be updated |
|---|---|---|
| Microsoft Outlook | ‐ | There are no settings for authentication. No update is needed. |
| Thunderbird (POP) | Confirm settings |
|
| Thunderbird (IMAP) | Confirm settings |
|
| Standard Mail App (macOS Ventura or later) | Confirm settings | Go to STEP 4. Change the Authentication for Incoming Mail Server (POP) and Outgoing Mail Server (SMTP) to パスワード (= Password).
|
| iPhone/iPad Mail App | Confirm settings |
|
- If you are using a mailer not listed here:
-
Please refer to the following page for other setup guides.
Reference: FAQ
Important request regarding your settings:
To protect customer information, Asahi Net strongly recommends using TLS 1.2 or later for sending and receiving messages. (We do not support sending or receiving messages using TLS 1.0/1.1.)
Please check for unsupported versions of your OS and mailer
You may not be able to send or receive emails if you are using an unsupported OS or mailer that is incompatible with the latest security standards (such as TLS 1.2 or later). To use Asahi Net’s email services safely, please keep your mailer up to date.
- *Asahi Net cannot give guidance on how to set up an OS or a mailer that is no longer supported. Thank you for your understanding and cooperation.
- Reference: Unsupported OS and mailers
-
- Windows XP and older, Windows 7, Windows 8
- Outlook 2010 and older, Outlook Express
- All versions of Windows Live Mail
- Mac Mail 10.11 and older
If you wish to check or send your email as soon as possible, please use Asahi Net’s Web Mail, which allows you to access your email directly in a web browser.
You can log in and use the service with the ID and password of your mailer.
- *For specification and security reasons, please update your web browser to the latest version.
5. Inquiries regarding this announcement
We expect to receive many inquiries near the end-of-support date. As a result, it may take us longer than usual to respond. We apologize for any inconvenience it may cause you, and we appreciate your understanding.
Online Technical Support Inquiries
Thank you for using Asahi Net and we look forward to continuing to serve you.