.NET DNS MX Wizard is a class library that lets you query a Domain Name System(DNS) server for Mail Exchange(MX) Resource Records(RR) and other types of DNS queries. MX RR's contain the name of the server responsible for handling mail for a domain. Multiple resource records can exist for any server and each record has an associated preference level with it which lets you determine which server to try and communicate with first. You can also use multiple DNS server's for faster and more robust queries. Most DNS queries are supported, including the basic IP -> Domain names and Domain Name -> IP's query and also the Zone Authority information.

This control has many uses, here are some

• You can write your own SMTP Server and use this to lookup where to deliver the mail
• Verify email addresses by looking up the domains MX record and verifying the email address with the mail server for the domain
• Verifying and watching to make sure your companies MX records are correct and haven't been 'hacked'
• Pull up Zone Authority Records for a domain
• View all the IP's associated with a domain

The control gives you complete control over the data by letting you access all the returned MX servers, their preference level and automatically giving you the preferred server. The class can automatically detect the local machines DNS server and also allows you to set your own DNS server to use for the lookup.

The .NET DNS MX Wizard class library has a lot of power and features built-in. All the code is 100% managed and does not rely on any external dll's or dependencies. The code is written to be highly efficient and robust. Asynchronous and Synchronous methods provide greater control of how you want to implement the functionality.