DMARC checker Check if your domain has a DMARC record. BIMI checker Check if your domain has a BIMI record. SPF checker Check if your domain has a SPF record. DKIM checker Check if your domain has a DKIM record. TLS-RPT checker Check if your domain has a TLS-RPT record. MTA-STS checker Check if your domain has a MMTA-STS record.