Hello, Can you help me what can i do to prevent this error for the future. Some of the email failed because of this error.
Thank you.
Code:
ECDHE-RSA-AES128-GCM-SHA256:128 CV=yes: SMTP error from remote mail server after end of data: 550-5.7.1 Unauthenticated email from yahoo.com.au is not accepted due to\n550-5.7.1 domain's DMARC policy. Please contact the administrator of\n550-5.7.1 yahoo.com.au domain if this was a legitimate mail. Please visit\n550-5.7.1 Control unauthenticated mail from your domain - Gmail Help to learn about the\n550 5.7.1 DMARC initiative. 5si10114619pfh.230 - gsmtp
ECDHE-RSA-AES128-GCM-SHA256:128 CV=yes: SMTP error from remote mail server after end of data: 550-5.7.1 Unauthenticated email from yahoo.com.au is not accepted due to\n550-5.7.1 domain's DMARC policy. Please contact the administrator of\n550-5.7.1 yahoo.com.au domain if this was a legitimate mail. Please visit\n550-5.7.1 Control unauthenticated mail from your domain - Gmail Help to learn about the\n550 5.7.1 DMARC initiative. m85si9858336pfk.526 - gsmtp
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