Error "554 5.7.9: Message not accepted for policy reasons" when sending email to Yahoo
If your emails aren't being received by Yahoo Mail accounts, here's
information that should help you understand why this is happening.
Why you're seeing this error
Your message wasn't delivered because Yahoo was unable to verify that it came from a legitimate email sender.
Your email failed one or more of the following industry-wide
authentication checks that Yahoo uses to verify emails are truly sent
from the domains they claim to originate from. Click an authentication
method's link below to learn more.
- DKIM (Domain-Keys Identified Mail)
- SPF (Sender Policy Framework)
- DMARC (Domain-based Message Authentication, Reporting and Conformance)
These standards are designed to eliminate an email user’s exposure to
potentially fraudulent and harmful messages and have been adopted by
all major email providers and many technology companies.
We recently changed our DMARC policy to proactively protect our users
from increasing email spam that uses Yahoo users’ email addresses from
other mail servers. This is an important step to secure our users’ email
identities from being used by unauthorized senders. It also interferes
with some long-standing uses of identities that are authorized by the
user but not verifiable.
By publishing a "p=reject” record, Yahoo tells other DMARC compliant
systems to reject mail from Yahoo users that isn’t genuinely originated
from a Yahoo server. This affects only mail with Yahoo addresses on the
From: line, like this:
What you can do
In almost all cases, we recommend that you switch to sending mail
from your own domain. For mailing lists, also known as "listservs," you
should change your sending behavior by adding the mailing lists’
address to the "From:" line, rather than the sender’s address. Also,
enter the actual user/sender address into the "Reply-To:" line.
You can also change your email client's "send as" settings to use
Yahoo SMTP servers. Consult with your third-party email client's help
pages, or FAQs, for information on how to change these settings.