Alibaba Cloud DNS (DNS) - Reverse DNS is supported
Nov 27 2025
Alibaba Cloud DNS (DNS)Content
Target customers: Enterprise customers that place high importance on the legality, credibility, and security of their server IPs. For example: 1. Enterprises with self-built mail servers – Boost the success rate of outbound email and reduce the risk of messages being rejected or marked as spam by mainstream mail providers. 2. Financial, government, and mid‑to‑large enterprises with strict security auditing – Strengthen identity and access auditing, add an extra verification step for protocols such as SSH and FTP, and help satisfy internal security policies and external compliance checks. New specifications/pricing: 1. Added reverse lookup configuration to quickly map IP addresses back to domain names. – Email trust verification: By combining PTR with SPF, you can ensure alignment between the sending IP and domain, lowering spam misclassification and improving inbox placement. – Security and identity assurance: Services like SSH, FTP, and databases can leverage reverse DNS to validate client IPs, strengthen access control, and enhance overall security. 2. Reverse DNS is charged on a pay‑as‑you‑go basis. – PTR records are billed at 1 CNY per record per day, based on actual usage. Make the service scalable for different business sizes.
Help Document
https://www.alibabacloud.com/help/dns/what-is-reverse-parsing