计算机网络(2)——手动SMTP

最新推荐文章于 2024-10-31 20:19:43 发布

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最新推荐文章于 2024-10-31 20:19:43 发布 · 1.3k 阅读

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#计算机网络 #python #SMTP

#file name:PA01_3.py
#writer:Zhang_Jingtun(Ordinary_Crazy)
#initial date:20180310
from socket import *
msg = "\r\n I love computer networks!"
endmsg = "\r\n.\r\n"

# Choose a mail server (e.g. Google mail server) and call it mailserver
mailserver =('smtp.163.com', 25)

# Create socket called clientSocket and establish a TCP connection with mailserver
#Fill in start
clientSocket = socket(AF_INET, SOCK_STREAM)
clientSocket.connect(mailserver)
#Fill in end

recv = clientSocket.recv(1024)
print (recv)
if(str(recv[:3],"utf-8") != "220"):
	print('220 reply not received from server.')


# Send HELO command and print server response.
heloCommand = 'HELO Alice\r\n'
clientSocket.send(heloCommand.encode())
recv1 = clientSocket.recv(1024)
print (recv1)
if(str(recv1[:3],"utf-8") != '250'):
	print ('250 reply not received from server.')
	
loginCommand = 'AUTH LOGIN\r\n'
clientSocket.send(loginCommand.encode())
recv7 = clientSocket.recv(1024)
print (recv7)
if str(re