No.0844

Outgoing Mail Submission Port (587)

Who this page is for

This page is for ASAHI Net members whose Internet connection is being provided by another Internet provider that is engaged in Outbound Port 25 Blocking. The member may have problems sending their ASAHI Net email and may need to to use outgoing mail submission port 587.

What is the outgoing mail submission port (587)?

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 the Outgoing Mail Submission Port (587) will allow ASAHI Net email to be sent.

It will be necessary to change some of your settings.

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 587 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

Compatible outgoing mail servers

Making the Port 587 setting in email clients

>> Outlook Express 6
>> Mail for Apple MacOSX (10.4)

Outlook Express 6

1. Open Outlook Express.

2. Click on the Tools menu and select Accounts.

3. Click on the Mail tab.

4. Highlight the account you have for ASAHI Net, probably called "pop.asahi-net.or.jp" and then click the Properties button.

5. Click the General tab, and check your settings are as follows:
Name: Your name written in the way you want it to appear when people get your email.

E-mail address: Your ASAHI Net email address (eg. ab3c-defg@asahi-net.or.jp) or your ASAHI Net MyMail address if you have registered one.

Reply address: Only enter an email address here if you want to receive the reply to a different email address than you entered in the E-mail address: box.

6. Click the Servers tab, and check your settings are as follows:

Click the Settings button.
Check the Use the same settings as my incoming mail server box.
Click the OK button.

7. Click the Advanced tab, and check your settings are as follows:
Outgoing mail (SMTP): 587

8. Click Apply if you have made any changes. Click OK.

9. The Internet Accounts window will appear showing the accounts you have. Click Close.

10. If you are connected to the Internet, click the Send/Recv button to download your ASAHI Net email.

11. If you were unable to receive your ASAHI Net email or send email, return to the top of this page and check your settings again.

Mail for Apple MacOSX (10.4)

1. Go to your dock and click on the Mail icon to open Mail. If you do not see it in your dock, you should be able to find it in the Applications folder in the hard drive.

2. From the Mail menu, choose Preferences.

3. In Mail Preferences, choose your account (eg. POP Account) from the Accounts section, click on the Account Information tab, and check your settings.

* 1 You must enter the password in lower case characters.

4. Click on the Server Settings button.

5. In the window that appears, enter your settings (as listed below).

* 1 Only use the mails.asahi-net.or.jp mail server if you are using our Virus Check Service.

6. Click OK.

7. The Accounts window becomes active again. Click Close, and save the changes.

8. If you are connected to the Internet, click the Get Mail button. Mail should start downloading your mail now.

9. If you were unable to receive your ASAHI Net email or send email, return to the top of this page and check your settings again. To create a new configuration see Mail Configuration for Apple MacOSX (10.4)