I'm looking for:

• a safe/secure web admin control panel for a web server


• preferably free and open source


• in official repositories or at least with regular updates and an easy way to update to newer versions


• allows email and username creation (preferably if it allows to choose sftp-only/ssh+sftp access)


• supports configuring email aliases and forwarding

For example, I saw that DTC (Domain technologie control) is (or better said, was) included in debian, but not in Debian stable/testing and Ubuntu 12.04 because of recent security issues.

What's the recommended admin control panel for Ubuntu servers?