550-5.7.26 Your email has been blocked because the sender is unauthenticated. 550-5.7.26 Your email has...

Topic: 550-5.7.26 Your email has been blocked because the sender is unauthenticated.

Post 550-5.7.26 Your email has been blocked because the sender is unauthenticated.
by ashaseeb on 2025年1月7日

hi,

I recently purchased "FULL EMAIL SERVICE" and configured the emails but emails are not going out and returning delivery failed messages (listed below).

I configured "Manage DKIM Signing" but I am afraid I did it wrong and missed something. I would appreciate it if you could guide me through the required settings or you can set it up yourself. The domain and email are both purchased/registered from Dynu under my account.

thank you!!!

EMAIL DELIVERY FAILED WITH THIS MESSAGE:
------------------------------------------------------------------
The following recipient(s) could not be reached:
ashaseeb@gmail.com
Error Type: SMTP
Remote server (142.251.167.27) issued an error.
hMailServer sent: .
Remote server replied: 550-5.7.26 Your email has been blocked because the sender is unauthenticated.
550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM.
550-5.7.26
550-5.7.26 Authentication results:
550-5.7.26 DKIM = did not pass
550-5.7.26 SPF [i36t.com] with ip: [162.216.242.87] = did not pass
550-5.7.26
550-5.7.26 For instructions on setting up authentication, go to
550 5.7.26 https://support.google.com/mail/answer/81126#authentication af79cd13be357-7b9ac53e825si4662704485a.652 - gsmtp

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2025年1月9日 8:48
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