生产中的邮件属性-Jhipster 4.2.8

我在develop中对我的公司的邮件帐户进行了以下配置,运行良好:

mail:
    host: smtp.xxx.es
    port: 587
    username: notifications-noreply@xxx.es
    password: xxxx
    protocol: smtp
    #tls: true
    properties.mail.smtp:
        auth: true
        from: notifications-noreply@xxx.es
        starttls.enable: true
        ssl.trust: smtp.xxx.es

我将相同的数据从“application-dev.yml”复制到“application-prod.yml”。

我在谷歌云中进行部署。

它不会向我发送邮件,日志告诉我以下内容:

: Email could not be sent to user 'joseluis.xxx@xxx.com': Mail server connection failed; nested exception is com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.xxx.es, 587; timeout -1;
nested exception is:
java.net.ConnectException: Operation timed out (Connection timed out). Failed messages: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.xxx.es, 587; timeout -1;
nested exception is:
java.net.ConnectException: Operation timed out (Connection timed out)

有人能帮我吗?