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I'm having problems sending mail in my POP3 email client. What can I do?

The Yahoo! Mail SMTP server requires authentication. To learn how to configure your email application, please choose from the following supported applications:

If your application and version are not listed above, you might have trouble connecting to the Yahoo! Mail SMTP servers. Other applications and versions are not supported.

Please make sure that you've entered your Yahoo! Mail address as the "From" address in your email client. You won't be able to send mail if you've entered another address.

If you have the Norton AntiVirus email feature enabled, you might have to do additional configuration to use Outlook or Outlook Express. For more information, please visit the Symantec web site.

If you've tried the above steps and continue to have problems, your ISP might not allow its users to send messages with other companies' SMTP outgoing mail servers.

Can you not send messages, even after setting the "Outgoing Mail (SMTP) Server" field in Yahoo! Mail to smtp.mail.yahoo.co.uk and your client to use authenticated SMTP? If you're unable to send email, try using port 587 when sending via Yahoo!'s SMTP server. Here's how to make this change:

  1. From the "Tools" menu, select "Accounts."
  2. Select your Yahoo! POP account and click the "Properties" button.
  3. Click the "Advanced" tab.
  4. Next to "Outgoing server (SMTP)," change port 25 to 587.
  5. Click "Apply." Then click "OK" and "Close."
This image shows the above steps for Microsoft Outlook:

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