新人用python实现smtp协议发邮件，出现了点问题，已经困扰本人两天，求大佬帮帮忙

[xuzheng00]

问题在于下面两条虚线之间的身份验证，我换过163、sina等等邮箱都验证不通过，不是没有开服务的原因，我每个邮箱都开启了smtp服务。我觉得是命令格式的问题，但是我改了很多遍都没解决。。哪位大佬给看下吧。。。跪了。。

from socket import *           
import base64
import getpass
import codecs

msg = "\r\n I Love Computer Networks!"                                  #Declarations
endmsg="\r\n.\r\n"
mailfrom = "MAIL FROM:<[e-mail]>\r\n"
rcptto="RCPT TO:<[e-mail]>\r\n"
data = "DATA\r\n"
quitmsg="QUIT\r\n"

#Choose a mail server (e.g. Google mail server) and call it mailserver
mailserver="smtp.163.com"                                               #Use the local Host as SMTP Server
mailPort=25                                                           #Specify Port For Local SMTP
connectaddress=(mailserver,mailPort)

#Create socket called clientsocket and establish a TCP connection with mailserver
clientSocket=socket(AF_INET,SOCK_STREAM)                                #Assign IP address and port number
clientSocket.connect(connectaddress)                                    #Connect to Local SMTP
recv=clientSocket.recv(1024)
print(recv)
if recv[:3].decode()!='220':                                            #Print Error Clause
    print("220 reply not received from server")

#Send HELO command and print server response.
heloCommand="HELO Alice\r\n"
clientSocket.send(bytes(heloCommand.encode()))
recv1=clientSocket.recv(1024)
print(recv1.decode())
if recv1.decode()[:3]!="250":
    print("250 reply not received from server.")

print('-----------------------------------')

loginini = b'AUTH LOGIN\r\n'
clientSocket.send(loginini)
recv2 = clientSocket.recv(1024).decode('utf-8')
print('222+ ',recv2)

userCommand = base64.b64encode(b'[e-mail]\r\n')#在这里发送用户名，必须是qq邮箱，然后base64,b64encode(b'username')，转换成base64编码，*****指的是转成base64格式后的用户名
clientSocket.send(userCommand)
recv3 = clientSocket.recv(1024).decode('utf-8')
print('333+ ', recv3)

passwordCommand = base64.b64encode(b'xudoudou3661615\r\n')#在这里发送密码，必须是qq邮箱授权码，需要开启邮箱smtp服务后才能发短信获取，具体方法参见qq邮箱账户设置，然后base64,b64encode(b'password')，转换成base64编码，*****指的是转成base64格式后的授权码
clientSocket.send(passwordCommand)
recv4 = clientSocket.recv(1024).decode('utf-8')
print('444+ ', recv4)

print('-----------------------------------')
#Send MAIL FROM command and print server response.
clientSocket.send(bytes(mailfrom.encode()))                             #send mail, had to convert to bytes
check=clientSocket.recv(1024)
print(check)                                                            #print confirmation of working messages

#Send RCPT TO command and print server response.
clientSocket.send(bytes(rcptto.encode()))                               #recieve, had to convert to bytes
check1=clientSocket.recv(1024)
print(check1)                                                           #print confirmation of working messages

#Send DATA command and print server response.
clientSocket.send(bytes(data.encode()))                                 #DATA, had to convert to bytes
check2=clientSocket.recv(1024)
print(check2)                                                           #print confirmation of working messages

#Message ends with a single period.
clientSocket.send(bytes((mailfrom+msg+endmsg).encode()))                #Concatinate bits for message
check3=clientSocket.recv(1024)
print(check3)                                                           #print confirmation of working messages

#Send QUIT command and get server response.
clientSocket.send(bytes(quitmsg.encode()))                              #Quit the session
check4=clientSocket.recv(1024)
print(check4)                                                           #print confirmation of working messages

[AlbertS]

可以试试smtplib，很方便的

from email.mime.text import MIMEText
import smtplib

def send_text_mail(sender, password, receiver_list, subject = '', content = '', smtp_center= 'smtp.163.com'):

    # set message of needing to send
    msg = MIMEText(content, 'plain', 'utf-8')
    msg['Subject'] = subject
    msg['From'] = sender
    msg['To'] = ';'.join(receiver_list)

    # send email
    server = smtplib.SMTP(smtp_center, 25)
    server.set_debuglevel(1)
    server.login(sender, password)
    server.sendmail(sender, receiver_list, msg.as_string())
    server.quit()

def test_send_text_mail():

    from_addr = input('From:')
    password = input('Password:')
    to_adrr = '[e-mail]' #input('To:')

    subject = 'Python Email'
    content = 'This is a test email that created by python and sended by Albert!'

    # send email
    send_text_mail(from_addr, password, [to_adrr], subject, content)


if __name__ == '__main__':
    test_send_text_mail()

[陈年椰子]

换下思路，试试 smtplib 。