Email Address Validation for ASP.NET

Question

What do you use to validate an email address on a ASP.NET form. I want to make sure that it contains no XSS exploits.

This is ASP.NET 1.1

Answer 1

In our code we have a specific validator inherited from the BaseValidator class.

This class does the following:

1. Validates the e-mail address against a regular expression.
2. Does a lookup on the MX record for the domain to make sure there is at least a server to deliver to.

This is the closest you can get to validation without actually sending the person an e-mail confirmation link.