Noun
DKIM (uncountable)
(Internet) Initialism of DomainKeys Identified Mail: an email authentication method designed to detect spoofing.
Any domain created from this date forward will require verification through the use of a DKIM and SPF record to send and receive messages. Source: Internet
Besides RBLs, I require SPF or DKIM pass, and a reverse pointer exist. Source: Internet
Email service providers that support DKIM or DMARC, such as Gmail and Yahoo!, check inbound email to see whether an organization that claimed to have signed a message actually did. Source: Internet
It’s a very easy process, so there’s no excuse to not upgrade your DKIM record to 2048 bits. Source: Internet
Note that before you make any changes, your old DKIM TXT records should be left in place until the changeover is complete in order to support your existing DKIM record and ensure proper authentication stays intact. Source: Internet
Senders that email on behalf of clients can configure their DKIM signature to use their domain so the “from” address domain and DKIM signature match when sending traffic over a dedicated IP. Source: Internet