Hello,
Thank you for contacting Yahoo Postmaster.
The error you’re getting is caused by an issue with your From address.
- These errors indicate that the domain used to the right of the @ in the MAIL FROM does not appear to be a real domain.
- We determine if the domain name exists by using an SOA query; therefore, if multiple subdomains are used in MAIL FROM commands, then besides setting up a DNS A or MX record (perhaps using a wildcard), then SOA records must be set up as well.
- This error can be returned as either a timeout/servfail (451) or a permfail (554)
You’ll need to work with your provider to make sure your From address meets these requirements to resolve the error.
Thanks for understanding.
Have a great day!
Warm regards,
Emilia
Yahoo Postmaster
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正常情况soa记录应该是dns自动配置的,可能有些不是主流dns服务商没做好导致soa缺失了,补上就好了
- unresolvable temporarily deferred Message domainunresolvable temporarily deferred message unresolved unresolvable temporarily attempting connection unresolved unexpected temporarily notebook exceeded crashing maintenance temporarily request service temporarily cluster running request unresolved external方法symbol temporarily unavailable service 503