avast4 ini
[MailScanner]
AutoSetProtection=0
ShowTrayIcon=1
UseDefaultSmtp=0
DefaultSmtpServer=smtp.mail.yahoo.com
DefaultPopServer=pop.mail.yahoo.com

and i tried
[MailScanner]
AutoSetProtection=0
ShowTrayIcon=1
UseDefaultSmtp=1
DefaultSmtpServer=smtp.mail.yahoo.com
DefaultPopServer=pop.mail.yahoo.com

but nothing I can receive but not receive!!!