PCTech: Error message 0x80042110 sbcglobal.net and att customers

How do I fix this error message?

0x80042110 - Your POP3 server is providing inconsistent information. The number of messages returned by the STAT command does not match the number of items returned by the UIDL or LIST commands. Contact your POP3 or Internet service provider.

This message is being released by ATT: 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.

Make the Changes Manually: To manually make the required setting changes in Outlook, Outlook Express and other email applications, please follow these detailed instructions.

Open your email client program.
Locate the email account settings for your particular client.
Change the POP server to pop.att.yahoo.com.
Change the SMTP server to smtp.att.yahoo.com.
Check the option labeled Use an encrypted connection (SSL).
Change the SMTP port to 465.
Check the option labeled Use an encrypted connection (SSL).
Change the POP3 port to 995.
Confirm the above settings before clicking OK

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.