What is DAMRC? Read an article here. How to set up DMARC? In “From/Return Path” field a domain address, the same as in DKIM settings, must be given. For your convenience a preview DKIM field was added below. +–Find out how to configure DMARC Contact out customer service. Send us an e-mail or go to emaillabs.io and click on “Live Chat” bookmark in bottom right corner.