hi jp
You can download mails from yahoo pop3server, but you can't download from rediff mail server since it is not having a pop3 server.You can download mails from yahoo to rediff by clicking the pop3 mails link and you have to click create new mail account link .It will show a page for adding a new pop3 account.Give the server name as pop.mail.yahoo.com and give your yahoo user name and password . After submitting the details you can click check mail to download mails from yahoo
Regards
Yogindar
