
Someone can send your customers an invoice from your domain with a different bank account, and without a DMARC policy their mail servers have no rule from you on what to do with it.
Move to p=reject too early, and your own newsletter or accounting mail bounces as well. HostSherlock reads the DMARC reports that mail providers such as Gmail and Outlook send about your domain, and gives your assistant what only those reports show.
https://mcp.hostsherlock.com/v1/mcpNone in the store listings. The server needs sign-in, so we could not check it