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Unauthenticated email from ecomail.tld is not accepted due to domain's 550-5.7.26 DMARC policy
Unauthenticated email from ecomail.tld is not accepted due to domain's 550-5.7.26 DMARC policy

Description of the DMARC Policy Error.

Nathan HERBERT avatar
Written by Nathan HERBERT
Updated over a week ago

You just sent an email and a few moments later you receive a return email: Undelivered Mail Returned to Sender

The error message stated is:

Unauthenticated email from ecomail.fr is not accepted due to domain's 550-5.7.26 DMARC policy

This message informs you that you have sent an email with an Ecomail email address as the sender but using a non-Ecomail sending server. This practice is not allowed to ensure the security of sent emails and to avoid phishing attempts and scams.

Check your email software carefully, it is very likely that the selected SMTP server (for sending) is not the one from Ecomail.

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