Mail delivery failed: returning message to sender (This is a permanent error)

[kentgravity]

When I test the mail it works, when I register someone or try ''Forgot password'' I get spam email with message 

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

    host gmail-smtp-in.l.google.com [74.125.71.27]
    SMTP error from remote mail server after end of data:
    550-5.7.1 Unauthenticated email from yahoo.com is not accepted due to domain's
    550-5.7.1 DMARC policy. Please contact the administrator of yahoo.com domain if
    550-5.7.1 this was a legitimate mail. Please visit
    550-5.7.1  https://support.google.com/mail/answer/2451690 to learn about the
    550 5.7.1 DMARC initiative. y110-v6si9759439wrb.305 - gsmtp

I use SMTP website email but I get spam email in yahoo mail

when I send a message to someone in the presta admin panel, the person gets email without any problem

[luisleitaoaudio]

Hi 

Many users use Cpanel without have access to WHM.

CPanel / WHM have a option to block smtp.

This feature prevents users from bypassing the mail server to send mail, a common practice used by spammers. 

If you have  access to WHM turns off this feature (SMTP Restrictions)(Picture Attached)

If you dont have access to WHM contact your hosting provider.

SKYPE: luisleitaoaudio

[kentgravity]

Hey luisleitaoaudio,

Thank you for your reply, I do not have WHM option in my cPanel.

I'll attach a screenshot of the options that I have