The mails from Yahoo! is as follows:

Dear AT&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&T Yahoo! Member ID, password, and email messages are transmitted securely between your mail software (such as Outlook or Outlook Express) and the AT&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&T Yahoo! Customer Support

Please do not reply to this message. This is a service email related to your use of AT&T Yahoo!. To learn more about Yahoo!’s or AT&T’s use of personal information, including the use of web beacons in HTML-based email, please read our Privacy Policy. Yahoo! is located at 701 First Avenue, Sunnyvale, CA 94089. AT&T Internet Services is located at PO Box 2203 San Ramon, CA 94583.