sundaridevi - 3:18 pm on Oct 23, 2010 (gmt 0)
You can do all this on hurricane electric (http://he.net). The problem is you'll have to do extensive scripting using PROCMAIL, an archaic language (see: [en.wikipedia.org...] as well as monitor storage yourself. I quit using HE about 8 years ago because of the extensive excess storage costs they always wanted to charge without offering any easy way to monitor it.
Maybe the situation has changed by now, but on HE shared or dedicated servers you can do almost anything you want, but you'll have little support.