[1] [CITE@ja[ご使用ドメインからの未認証メールを制御する - Gmail ヘルプ]]
( ([TIME[2013-10-04 01:36:35 +09:00]] 版))
<https://support.google.com/mail/answer/2451690>

[6] 
[CITE@ja[DMARC レコードの追加 - Google Workspace 管理者 ヘルプ]], [TIME[2024-03-21T08:03:42.000Z]] <https://support.google.com/a/answer/2466563>

[2] [CITE[DMARC.org - Domain-based Message Authentication, Reporting and Conformance]]
( ([TIME[2013-07-26 17:50:10 +09:00]] 版))
<http://dmarc.org/>

[FIG(quote)[
[FIGCAPTION[
[3] [CITE@en-US[dmarc.org – Domain Message Authentication Reporting & Conformance]]
( ([TIME[2016-05-31 20:43:31 +09:00]]))
<https://dmarc.org/>
]FIGCAPTION]

> DMARC, which stands for “Domain-based Message Authentication, Reporting & Conformance”, is an email authentication protocol. It builds on the widely deployed SPF and DKIM protocols, adding a reporting function that allows senders and receivers to improve and monitor protection of the domain from fraudulent email.

]FIG]


[4] [CITE@en[RFC 7489 - Domain-based Message Authentication, Reporting, and Conformance (DMARC)]]
( ([TIME[2016-05-31 06:53:47 +09:00]]))
<https://tools.ietf.org/html/rfc7489>


[5] 
[CITE[カスタムメールドメイン | Stripe のドキュメント]], [TIME[2024-03-21T07:42:19.000Z]] <https://docs.stripe.com/payments/account/email-domain#sender-authentication>