Unverified50% confidenceFactExact time
The three protocols SPF, DKIM, and DMARC are all bound to the sending domain, not to the Gmail account itself.
1
Sources
50%
Confidence
Long-term
Relevance
10/11/2026
First Seen
Sources
Related Entities
Related Claims
VerifiedSPF declares authorized IPs via DNS TXT records, DKIM adds a digital signature to email headers via asymmetric encryption to verify that content has not been tampered with, and DMARC defines handling policies for authentication failures and provides aggregate reports.80% similarVerifiedDMARC is an email authentication protocol built on top of SPF and DKIM that allows domain owners to tell receiving parties how to handle emails that fail authentication.79% similarUnverifiedDKIM signatures are independent of the transmission path; even if an email is forwarded multiple times, the signature remains valid as long as the signed portion has not been modified, compensating for SPF's shortcomings in forwarding scenarios.78% similarVerifiedSPF通过DNS TXT记录声明哪些IP地址被授权代表某域名发送邮件75% similarVerifiedSPF、DKIM、DMARC三项技术配置是企业邮件基础设施的必选项，用于保证邮件送达性74% similar
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