Hi all.

I have a client for whom I have programmed a web application with
subscribers. He wants to give ability to his subscribers to send mass
emails to their contacts through his web application. Right now, the
site is on a IIS server running Windows Server 2003. And I'm using
just standard SMTP to send emails through his web application via a
CDO asp script.

I'd like now to set-up mass emails for him, but I am concerned about
the following:

1) I don't want his emails to be flagged as spam especially since his
subscribers may be sending a lot of emails and we have no control
over
to whom they're sending it.

2) I don't want his IP to be blacklisted either and then all
subscribers won't be able to send emails.

3) I don't want to overload or slow down the server if so many emails
get sent everyday...

These are the kind of questions I have and I'd like some reall expert
advice. Should I set up emails on a seperate server? should I use
some
software like MS Exchange? etc... etc...

Any would be greatly appreciated.

By the way, my client would be ready to pay someone to us set
this up properly.

Thanks in advance

Al