Mailer 报错:could not initiate SMTP session: remote error: tls: handshake failure

我配置了邮件,配置文件节选为:

[mailer]
ENABLED = true
PROTOCOL = smtps
SMTP_ADDR = gz-smtp.qcloudmail.com
SMTP_PORT = 465
USER = ***
PASSWD = ***
FROM = ***

但是返回了错误,内容为could not initiate SMTP session: remote error: tls: handshake failure
我可以肯定邮件Server正常工作,因为我的其他业务相同配置正常运行