Got bad greeting from SMTP host: smtp.163.com, port: 465, response: [EOF]

host 为 smtp protocol为smtps 多了个s
mail:
#smtp服务主机
host: smtp.163.com
#服务协议
protocol: smtps
# 编码集
default-encoding: UTF-8
#发送邮件的账户
username: [e-mail]
#授权码
password: xxxxx
port: 465
test-connection: true
properties:
mail:
smtp:
auth: true
starttls:
enable: true
required: true