InterPC.SPF allow .NET users to check if an IP is allowed to post mail with a given hostname (smtp HELO command) or email address regarding to the SPF policy of the concerned domain.
InterPC.SPF also offers SPF objects (Record, Terms, Mechanisms, Modifiers ...) that provide parsing from string and can return normalized string representations of themselves.
Dns queries are made using csharp managed classes based on
Alphons van der Heijden .NET DNS resolver.
To see InterPC.SPF in action, you can use the
InterPC SPF test Web page or consult the
Quick samples wiki page.
Source code repository also include a Win forms sample application.