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More Secure, Less Spam: Enforcing Email Standards for a Better Experience

https://blog.postmaster.yahooinc.com/

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To guide and help senders support us in that mission, 
we have documented our sending best practices on our Sender Hub. 

In addition, our postmaster teams have assisted the sending community 
to achieve the best results for them and ultimately for our users.
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https://senders.yahooinc.com/best-practices/

For more sender best practices, 
read the Messaging Anti-Abuse Working Group's Senders 
Best Communications Practices Version 3.0 .

https://www.m3aawg.org/sites/maawg/files/news/M3AAWG_Senders_BCP_Ver3-2015-02.pdf

== Sender Best Practices ==
なにを指すのか、分からないものもある。-- ToshinoriMaeno <<DateTime(2023-12-10T08:19:37+0900)>>
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Send Emails customers want
Authenticate using SPF, DKIM, and DMARC
Segregate Email types by IP or DKIM domain
Allow users to easily unsubscribe
Remove invalid recipients
Enroll in complaint feedback loop (CFL)
Publish reverse DNS (PTR) records
Ensure mail servers are secure
Control the flow of your outbound emails
Be compliant with RFCs and CAN-SPAM
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