無法在Digital Ocean服務器中發送電子郵件

Question

我有一個存儲在數字海洋中的應用程序，之前已存儲在其他服務器中。 在我的應用正常發送電子郵件之前，現在出現錯誤：我已經檢查了firewal內容，iptables配置，更改端口等。在我的本地環境中，電子郵件正常傳輸，如果我將其部署回舊服務器，則電子郵件正常傳輸。 還有什么呢？

org.apache.commons.mail.EmailException: Sending the email to the following server failed :      smtp-mail.outlook.com:25
at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1410)
at org.apache.commons.mail.Email.send(Email.java:1437)
at br.com.caelum.vraptor.simplemail.DefaultMailer.wrapUpAndSend(DefaultMailer.java:74)
at br.com.caelum.vraptor.simplemail.DefaultMailer.send(DefaultMailer.java:63)
at br.com.caelum.vraptor.simplemail.DefaultAsyncMailer$1.call(DefaultAsyncMailer.java:54)
at br.com.caelum.vraptor.simplemail.DefaultAsyncMailer$1.call(DefaultAsyncMailer.java:49)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.mail.MessagingException: Could not connect to SMTP host: smtp-mail.outlook.com, port: 25;
nested exception is:
java.net.SocketTimeoutException: connect timed out
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1961)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:654)
at javax.mail.Service.connect(Service.java:317)
at javax.mail.Service.connect(Service.java:176)
at javax.mail.Service.connect(Service.java:125)
at javax.mail.Transport.send0(Transport.java:194)
at javax.mail.Transport.send(Transport.java:124)
at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1400)
... 9 more
Caused by: java.net.SocketTimeoutException: connect timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:319)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:237)
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1927)

Answer 1

在聯系了數字海洋支持人員並打開通知該問題的票證后，我得知，他們默認情況下為新帳戶激活了一個垃圾郵件阻止程序，這是驗證所有者身份的必要聯系人。