One of the things I needed to complete my self-written spam-stopper, which acts like an SMTP proxy, is resolving DNS queries, reading SPF1 records, doing reversed lookups etc. On the .NET (2.0) framework, there is a simple implementation of a DNS component. But it is far from complete. The other project on DNS resolving on CodeProject, C# .NET DNS query component, by Rob Philpott is old, buggy, incomplete, and not supported anymore. It was time to take the official RFCs on DNS and build the application from ground up. I must admit, the influence of Rob's project is there, but the code is definitely not the same.
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