Avast Mail Shield not working with AT&T account and Outlook Express

I have gotten an error message from Avast when downloading email.

The message says that Avast mail shield cannot scan the emails because
I have an SSL secure connection configured in the mail client, Outlook Express 6.

Both incoming and outgoing server ports have "This server requires a secure connection (SSL)" ticked ON.

I think this setting may be required for att.yahoo.com servers. :confused

Should I just disable the mail guard in Avast?

Thanks

 

Have you read this?
http://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=458