Email not sending and delivery failed

What is the name of the domain?

What is the error message?

Delay reason: SMTP error from remote mail server after MAIL FROM:[email protected] SIZE=1680: 451 unable to verify sender

What is the issue you’re encountering

Email sending failed and unable to deliver after clouldflare integration. Initially I am unable to send or receive the email, but after setting up A and MX values to DNS only(unproxy) I am able to receive the mail but sending is still failing and getting delivery failure message.

You don’t have MX records, that’s why you can’t receive emails.

Create an MX record with name @ and target mail.maayus.com. The mail DNS record needs to stay unproxied.

For sending, please check your email with https://www.mail-tester.com/ and share a link to the result here.

Thanks for your quick response.
Initially I am unable to receive the emails, but after adding mx record I am able to receive the emails, but now the issue is email is not sending out and getting delivery failed message from host.

“Delay reason: SMTP error from remote mail server after MAIL FROM:[email protected] SIZE=1658: 451 unable to verify sender”

Attached here mx record entry

Thank you…

Please delete both of those MX records and then follow the instructions from my previous post.

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Thanks a lot, issue has been fixed after deleting and recreating it as per your instruction.

Thank you!!

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