cloudreve环境：Ubuntu 22.04
ewomail环境：CentOS 7.9.2009
发送测试邮件时提示：邮件发送队列出现异常, x509: certificate relies on legacy Common Name field, use SANs instead ,10 秒后重置
开启强制使用SSL连接后提示：邮件发送队列出现异常, tls: first record does not look like a TLS handshake ,10 秒后重置
运行openssl s_client -connect smtp.xxx.com:465后：Verify return code: 18 (self-signed certificate)
请问如何解决