Welcome to the new servers!
You should no longer use www.domain.com/menu to access
your Control Panel. The new cPanel for your domain is located at:
To access WebMail, use www.(yourdomain.com*)/webmail and log in with your full
mailbox name in this format: mailbox+yourdomain.com
(that's a plus sign instead of the @ sign).
(* substitute your actual domain name for "yourdomain.com")