qmail and DKIM

May 4, 2007 · Posted in Email, security · 100 Comments 

DomainKeys Identified Mail (DKIM) is a method for validating the identity associated with a message using using public-key cryptography and key server technology. DKIM is an enhanced version of Yahoo's Domain Keys and Cisco's Identified Internet Mail methods. As of February 2007 an IETF draft was accepted as "Proposed standard", it may take some more time till this will be a standard but the current version is stable ( according to dkim.org ).

Implementations of DKIM in email servers is not available as much as DomainKeys.
For qmail there is a patch that uses libdomainkeys to implement a replacement for qmail-queue that will verify and sign messages but this only works for DomainKeys not DKIM. I have developed a solution for qmail to be able to verify and sign messages with DKIM. Read more