Google and Yahoo to block email without DMARC

This applies to all who send bulk email in any amount and specifically to those sending 5,000 emails at a time. If you send more than 5,000 at one time, you will need to Google the new unsubscribe settings requirement.

On 1 February, Google and Yahoo will start blocking email that does not have SPF, DKIM, or DMARC settings correctly applied.

You should have these settings on your domain even if you don't send bulk emails.

And, if you use a service to send bulk emails you will need to check with that service as to what DNS settings are required for you domain.

To test your domain's compliance, go to https://mxtoolbox.com and enter your domain. If you get the three check marks in a green circle, your domain is setup correctly.

If you use something like MailChimp or ConstantContact, you will need to check with them to find out what additional DNS settings are needed to have their emails comply with the DMARC requirement.

Mailchimp - https://mailchimp.com/developer/release-notes/new-sending-domain-authentication-requirements/

Help exists on this topic too.

https://docs.zen-cart.com/user/email/advanced_email_troubleshooting/#11-spf-dkim-and-dmarc

You may think, "Oh, the 5,000 limit doesn't apply to me, I'm just a small fry," but as @dbltoe noted, this is really a best practice.

That's the same link as I used.:P

@simon1066: There could be a problem with the MailChimp instructions depending on the host. On myZenCartHost, there is always a . after the name.

i,e,. _dmarc.yourdomain.com would not work on our servers. It would have to be _dmarc.yourdomain.com. in order to work.

Note the extra period and the end.

Not sure if that's just a cPanel thing or not.