socket.gaierror：[Errno 11001] getaddrinfo 失败

Question

I have tried to attached a file to the mail using python. Code:

import smtplib
from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText
from smtplib import SMTPException


def send_Email():
    file1="abc.txt"
    message = "Test mail"
    msg = MIMEMultipart()

    msg.attach(MIMEText(file(file1).read()))

    try:
        smtpObj = smtplib.SMTP('smtp server name',port)
        smtpObj.sendmail(sender, EmailId, message, msg.as_string() )
        print "Successfully sent email"
    except SMTPException:
        print "Error: unable to send email"

Bt I have get the error: socket.gaierror: [Errno 11001] getaddrinfo failed

full error message:

 File "C:\Python27\lib\smtplib.py", line 249, in __init__
    (code, msg) = self.connect(host, port)
  File "C:\Python27\lib\smtplib.py", line 309, in connect
    self.sock = self._get_socket(host, port, self.timeout)
  File "C:\Python27\lib\smtplib.py", line 284, in _get_socket
    return socket.create_connection((port, host), timeout)
  File "C:\Python27\lib\socket.py", line 553, in create_connection
    for res in getaddrinfo(host, port, 0, SOCK_STREAM):
socket.gaierror: [Errno 11001] getaddrinfo failed

Answer 1

我确信当您从代理后面工作时会出现 gaierror。

Answer 2

问题是“smtp 服务器名称”的 DNS 查找失败 - 如果这是您的确切代码，那么您可以看到原因 - 如果不是，并且您拥有 SMTP 服务器的有效限定名称，那么您可能遇到防火墙问题/互联网连接等，还必须将端口设置为有效值以匹配您的服务器 SMTP 配置（通常是端口 25，但并非绝对总是如此）。

Answer 3

In my case was a host problem. Using debug mode, I spotted that in (host, port, 0, SOCK_STREAM) I got host=local and it should be host=localhost . In the run.py I defined localhost and the file hosts (c:\\windows\\system32\\drivers\\etc\\hosts) was defined local . They have to be equal, otherwise you get the socket.gaieeror.

Answer 4

There seems to be a bug in urllib3 version 1.25.9 package. This produced "socket.gaierror: [Errno 11001] getaddrinfo failed" error for me (working from behind an authenticated proxy server). Downgrading to urllib3 version 1.25.8 solved the problem.

Answer 5

The below answer may be quite irrelevant to the question. But,some users may have a different scenario.

If a server can be reached only through VPN and if we try to reach it with VPN disconnected, this error : "gaierror: [Errno 11001] getaddrinfo failed" crops up.

Connect to VPN and then executing the code should work good.

Answer 6

you might did a little mistake in settings.py file.. check your code one more time in your settings file settings.py:

EMAIL_BACKEND='django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'smtp.gmail.com'
EMAIL_HOST_USER = 'your_email'
EMAIL_HOST_PASSWORD = 'your_password'
EMAIL_PORT = 587
EMAIL_USE_TLS=True

Answer 7

I got this error when I tried using flask-mail I just had to resend the message and it worked perfectly well. I don't know why I got the error the first time perhaps it might be a bug in the library...

Answer 8

You need to login using your credential. Try:

 smtpObj = smtplib.SMTP('smtp server name',port)

 smtpObj .starttls() 
 smtpObj .login(email, password)
 smtpObj.sendmail(sender, EmailId, message, msg.as_string() )
 print "Successfully sent email"

Answer 9

I prefer u guys to run the file as administrator for eg open cmd as administrator then type cd C:\\into ur .py file path and then type python filename.py

it worked for me. good luck

Answer 10

您需要为您的主机邮件激活 IMAP/SMTP 服务。