java - mailR 连接被 Linux 拒绝，但 Windows 不拒绝

Question

我有mailR(发送电子邮件的R语言包)尝试从我的gmail帐户发送一些电子邮件。它在 Windows 上完美运行，但在 Linux 上我收到以下错误。在下面的示例中，我替换了电子邮件、用户名和密码。

代码:

library(mailR)
emails <- c("example1@host.com")

send.emails <- function() {
  for(x in emails){
    send.mail(from = from1,
    to = x,
    subject = subject1,
    body = body1,
    smtp = list(host.name = "smtp.gmail.com", port = 465, user.name = username,
    passwd = password, ssl = TRUE),
    authenticate = TRUE,
    send = TRUE)
  }
}

send.emails()

错误:

> send.emails()
org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp.gmail.com:465
    at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1410)
    at org.apache.commons.mail.Email.send(Email.java:1437)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.NULL
java:606)
    at RJavaTools.invokeMethod(RJavaTools.java:386)
Caused by: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.gmail.com, 465; timeout 60000;
  nested exception is:
    java.net.ConnectException: Connection refused
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1984)
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:656)
    at javax.mail.Service.connect(Service.java:367)
    at javax.mail.Service.connect(Service.java:226)
    at javax.mail.Service.connect(Service.java:175)
    at javax.mail.Transport.send0(Transport.java:253)
    at javax.mail.Transport.send(Transport.java:124)
    at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1400)
    ... 6 more
Caused by: java.net.ConnectException: Connection refused
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:579)
    at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:618)
    at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:299)
    at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:208)
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1950)
    ... 13 more
 Show Traceback

 Rerun with Debug
 Error: EmailException (Java): Sending the email to the following server failed : smtp.gmail.com:465 

同样，我在 Windows 上完全没有收到任何错误，并且电子邮件通过，当我在 Linux 上运行相同的脚本时，我收到所有这些错误。连接被拒绝...

如果我可以从我的 Linux 机器上运行这个脚本那就太好了。谢谢!

Answer 1

好的，我有答案了。令人惊讶的是，R 在 Windows 上运行不是问题，而在 Linux 上则不然(例如 download.file --internet2 或许多其他示例)。

Peerguardian 正在 Linux 系统上运行，并且 smtp.gmail.com 不知何故位于黑名单中。

我已将 smtp.gmail.com 列入白名单，现在一切正常!

我能够通过 IP 或白名单端口 465 列入白名单，两者都有效。