If DMARC policy is set as you describe, and Sender email matches (store@yourdomain.com) why would Shopify keep sending my customers email from store+########@t.shopifyemail.com ? This has been happening ever since I followed the instructions after the DMARC notification in January, and transferred my domain to Shopify. I apologize if this question is not properly positioned, please let me know if I should start a new thread