收件服务器主机名是什么?新手必看配置指南,新手必学,如何配置收件服务器主机名详解
What is the hostname of the receiving server? A must-read configuration guide for beginners, a must-learn: Detailed Explanation of How to Configure the Host Name of the Receiving Server
以上为机器翻译结果，长、整句建议使用 人工翻译 。