DKIM
Also called: DomainKeys Identified Mail
DomainKeys Identified Mail: the sending server adds a digital signature to each message, and the receiver verifies it with a public key the domain publishes in DNS. This shows the domain took responsibility for the message and that the signed content was not altered in transit. Every cloud service that sends mail for you needs its own DKIM key set up.
Further reading: www.rfc-editor.org
From the Security Academy
SPF, DKIM and DMARC Deployment Guide: Stop Others Sending Mail as Your Domain
Inventory every sender, set up SPF and DKIM, move DMARC from none to reject in stages, lock down unused domains, and meet Gmail, Yahoo and Outlook.com rules.
15 min read ·
Phishing and Business Email Compromise (BEC): Spotting and Stopping It
Common phishing and BEC techniques, from credential theft and AiTM session hijacking to fake vendor bank changes, plus SPF/DKIM/DMARC and payment verification.
8 min read ·
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