Submission Port Compatibility

From 1st June 2006, ASAHI Net has made it possible to use submission port 587 for the sending of email.

What is the submission port?

As one method to combat the sending of unsolicited email, some Internet providers are using Outbound Port 25 Blocking to prevent users of other Internet providers from being able to send email through port 25.

ASAHI Net members using another Internet provider for their Internet connection, and finding that the Internet provider is employing Outbound Port 25 Blocking, will not be able to send their ASAHI Net email.

In this case, using Submission Port 587 will allow ASAHI Net email to be sent.

Compatible outgoing mail servers

• mail.asahi-net.or.jp
• mails.asahi-net.or.jp

Precautions and settings

• Change the Outgoing mail server port setting in your email software to 587.
• Use SMTP authentication settings.
  >> What is SMTP authentication?
• Make sure the password is entered in lower case characters.
• In these cases, there is no need for the submission port setting.
  • If using an ASAHI Net Internet connection service.
  • If sending of email is possible with the SMTP over SSL setting.
  • If not using an ASAHI Net Outgoing mail server.
  • If the Internet provider is not using Outbound Port 25 Blocking

More information can be found here:
>> Outgoing Mail Submission Port (587)