Using DomainKeys Identified Mail (DKIM) to Protect your Email Reputation

SPAM and Phishing emails commonly spoof the sender domain, both as a way to evade spam filters and to engender the recipient's trust. Several email authentication methods allow organizations to prove emails purporting to originate from their domain actually did so. One such authentication framework, Domain Keys Identified Mail (DKIM), provides a relatively easy way for organizations to use cryptographic signatures to protect their e-mail reputations with only small changes to their existing email and Domain Name System infrastructures. However, in order to use DKIM successfully and effectively, organizations must fully understand its purpose, function and limitations and then take steps to manage and protect the encryption keys.