An undeliverable email is returned from the system administrator (outlook2003,2007,2010,2013,2016,2019,Office 365)

When using Outlook 2003, 2007, 2010, 2013, or 2016, you may receive an undeliverable email from the system administrator.

This is a server or provider specification. Please change the settings as below.

If you do not see the screens or windows described, you will need to reinstall.

For Outlook2003,2007,

Open the "Account Settings" window by selecting "Tools" → "Accounts" in Outlook.

Select the email address you want to change and press Change.

The "Change Internet E-mail" window will open, so press the Advanced Settings button.

When the "Internet E-mail Settings" window opens, select the "Outgoing Server" tab.

Check "My outgoing server (SMTP) requires authentication" and select "Log in to the receiving mail server before sending mail" at the bottom.

Click OK and return to the "Internet E-mail Changes" window, then press the "Test Account Settings" button.

Now you can test whether you can send and receive emails using this email address, so once these two steps are completed, the setup is complete.

Return to the "Change email account" window and click "Next" → "Finish".

If you have multiple email addresses, please change all settings.

outlook2010,2013,2016,2019 For Office365

Here we will use an image from Outlook 2013, but please use the same procedure for Outlook 2010, Outlook 2016, Outlook 2019, and Office 365.

Click the black tab "File" in the top left.

The account information screen will appear, so click the square "Account Settings" and then click "Account Settings".

A small window for "Account Settings" will open, so select the account with the error and click "Change" at the top.

When the "Change account" window opens, click "Advanced settings" in the bottom right corner.

When the "Internet E-mail Settings" window opens, select the "Outgoing Server" tab.
Additionally, check "My outgoing server (SMTP) requires authentication" and select "Log in to the receiving mail server before sending mail."

Once you have completed the above steps, click the "OK" button to close all windows.