bird.comWhat Are SSL, TLS, & STARTTLS Email Encryption?网页SSL、TLS 和 STARTTLS 指的是用于确保电子邮件传输安全的标准协议。 SSL (Secure Sockets Layer) and its successor, Transport Layer Security (TLS), provide a way to 更多内容请查看https://www.bird.com/zh/guides/ssl-tls-starttls-encyption