AT&T Yahoo email says I'm "using non-secure settings"?

Below is the text of an email a friend has received more than once. Is it legitimate, or a phishing scam?


--------------


Dear AT%26amp;T Yahoo! Customer:





We noticed that you are accessing email using non-secure settings in your email software.





We would like to ensure that your AT%26amp;T Yahoo! Member ID, password, and email messages are transmitted securely between your mail software (such as Outlook or Outlook Express) and the AT%26amp;T Yahoo! Mail servers. In order to meet this need, please enable SSL via the instructions that are available on the Help site.





Since multiple email notifications have already been sent out about this, we request that you please make the necessary changes immediately. Remember, you need to make these changes if you want to continue to send/receive email using a mail client.





Thank you for your cooperation,





AT%26amp;T Yahoo! Customer Support




AT%26amp;T Yahoo email says I'm "using non-secure settings"?
I would suggest calling AT%26amp;T and asking them if that is legit.Everyday there are new phishing techniques.