Default mail server
 

Ok so I have a question regaurding mail servers. Suppose I want to write an application that when a person opens it, it allows them to fill in their name and some comment and then send it to a centerilzed email server. I have the form and everything but i was wondering if there is a way to programaticlly determine someones default email server. I know in outlook when you create an account you specify a POP3 and SMTP server. Is there a way to find if a user already has one though? I'm trying to make the application as simplistic as possible. Any advice?

The simplest solution to this is, like Outlook, ask the user for their relevant details and store them securely for use from then on.