[niteriderxp]

It's great that you want to help people out.
The reality is that anyone that signs up with you does not value their privacy.

Also running an Exchange Server requires a Client Access License for each user of the server.
Some companies opt to get an External Connector if they have enough users.
Offering an unlicensed service to the public is bound to attract the wrath of Microsoft.

I manage an Exchange server at work and its trivial to access another person's mailbox.
We constantly do it for our legal department and for managers of terminated subordinates.

The difference between ACME corp Exchange hosting and a private party is accountability.
Corporations are accountable for the privacy, reliability, and the safety of data.
Very rarely can this be said about private parties.

The WHOIS of the ae34.com domain appears to show legitimate contact info for some person in CA.
That's about as much credibility as can be given to this service.

There are safer alternatives though.
Gmail allows you to sync to it via ActiveSync for free and their web based email is not terrible.
There are multiple respectable service providers that charge anywhere from $5-10 a month.