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Sending a DKIM Signed Email from C#

First off this code is intended to be instructional only! Yes it is possible to send a DKIM email from .net’s SmtpClient. But there are a few hacks/warnings to go with the following code. I’m pretty sure DKIM is designed for signatures to be added by the STMP server. All the emails I’ve seen with […]

2009 09 19 russ cryptography Comments (14)

Verifying a DKIM signature in C#

Quick background: DomainKeys Identified Mail (DKIM) is a digital signature and hash which are placed on your emails to verify they are coming from the domain they claim to be. One step in the defence against SPAM and phishing emails. What does the signature look like. Here’s a signature grabbed from an email sent from […]

2009 08 30 russ cryptography Comments (7)