To check if cartep.com has been flagged by spam filters, we need to see if the domain or its IP address is listed on common DNS-based blacklists, run diagnostics on SPF, DKIM, and DMARC, and review sender reputation metrics. Use Abstract API's IP Abuse Check tool to get a complete report on abuse, blacklists, and suspicious activity for cartep.com.

Cartep.com's email sender reputation is poor due to its recent registration date (2023-04-07) and high risk score (22). The lack of DMARC enforcement and disposable email classification further harm its credibility. Despite a strict SPF policy, the domain's undeliverable status and invalid SMTP contribute to low deliverability, causing emails to be filtered or rejected by recipient systems.

To improve domain reputation, cartep.com should promptly implement DMARC with enforcement, verifying messages originate from authorized servers. Next, maintain a consistent sending volume, avoiding sudden spikes or suspicious patterns. Third, remove the disposable email configuration, ensuring legitimate user accounts. Finally, authenticate email traffic using DKIM, proving authenticity and deterring spoofing attempts. These measures will significantly improve trust and reduce spam filtering overall.