How to Domainkeys/DKIM email signing using the C# SMTP client?

Question

I have written an program in C# which sends out emails. Now I have a requirement to sign outbound emails using Dominkeys/DKIM, but I\'m not sure how to do it.

I have

Answer 1

Use http://www.mimekit.org

Not only does it allow to use DKIM for signing, also you can include S/MIME certificates, PGP certificates and more. Also, its a very mature lib - the only one i've found that handles foreign languages (apart from english) correctly, since its completely and thoroughly coded with unicode in mind.

Its free and opensource.