gmail, outlook, etc.


Providers like Google or Microsoft are trying to protect their email servers from spam:

If an e-mail - such as an order confirmation - is sent automatically, this e-mail will only accepted if it is signed.

The so called domain record must have a DMARC policy.

If the domain record of your domain hasn’t this DMARC policy, the delivery of e-mails will failed in cases of a spam protection like above.

Another effects are:

  • Caddy can’t process the order proper
  • Next order will get the same order and invoice number!

Check your domain!

You can check, if your domain has a DMARC policy for example at:


If your domain hasn’t a DMARC policy, please send a message to your provider.

Your provider can add the DMARC policy and can solve the problem.