FAQ on DomainKeys Identified Mail

I’ve written a FAQ on DomainKeys Identified Mail. You can find it here. I wrote this while reading through the RFC looking for an answer to something else. (I really read the RFCs. Go figure.) I eventually found what I needed and decided to condense the knowledge into this FAQ since I’ve been asked about it enough times lately. If you are not familiar with DKIM, here is a short summary:

DomainKeys Identified Mail (DKIM) allows an organization to lay claim to a message they send in a way that recipients can verify. This allows the receiver to associate the reputation of the signing domain with the message received. It also allows receivers to check if the signature or signed headers have been modified or forged.