Get SPF records from a Domain

Question

What are the ways to Check SPF records on a domain?

There is a website where i can do it manually using - http://www.mxtoolbox.com/SuperTool.aspx

How can i do it

Answer 1

You basically need to do a DNS request asking for the MX/SPF record of the domain. There's a few examples of doing this in C# around. There's a library at http://mailsystem.codeplex.com/ that has a Validator class with GetMxRecords to do this that you might find useful