I know 1and1 changed something with their WebMail 2.0 website because domain (https://webmailcluster.perfora.net/xml/config/Webmail_Login (link is And this required a new login. I automatically open http://email.1and1.com/ (link is external) as one of my Home pages in Internet Explorer 10.0.4 (Windows 7 64-bit)..