Auto-responder Installation

I need an email web-interface (like Hotmail) installed on my linux machine, as well as an auto-responder for my email. I do not care which script is used, as long as I can log on to my email via the web, read it, download/send attachments, etc. There will only be 1 email account, but the program must be able to collect all email sent to it in a common mailbox. The auto-responder must be web-configurable as well. I am not looking for a custom script. There are many programs available that will do this. I only need someone to install and configure one of the existing scripts. I do not care which one is used as long as it will do these basic functions. This will need to be installed on a Redahat linux machine. I am using this email address now and cannot lose any email. The installer must also be able to configure sendmail if needed as well as change the DSN records as needed. BIND and Sendmail are already installed on the machine, and working. ## Deliverables 1)Working web-based email. 2)Working auto-responder. ## Platform Redhat linux