No DMARC record

DMARC (Domain-based Message Authentication, Reporting and Conformance) is a DNS record that tells the world's email providers how to handle emails that claim to come from your domain but have not been authenticated. No DMARC record was found. Without DMARC, anyone on the internet can send phishing emails that appear to come from your domain. Employees, customers, and partners can be deceived into thinking they are receiving legitimate email from your business. Major email providers (Gmail, Outlook) are increasingly filtering or blocking mail from domains without DMARC. Add a DMARC TXT record at _dmarc.yourdomain.com. Start with a monitoring-only policy (p=none) that sends reports to a free monitoring tool like Dmarcian or EasyDMARC. After reviewing 4 weeks of reports, tighten the policy to quarantine and then reject. This requires SPF and DKIM to be set up first.