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smtp_mail_client.py
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smtp_mail_client.py
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from socket import *
import base64
msg = "\r\n I love Computer Networks"
endmsg = "\r\n.\r\n"
mailserver = ("mail.smtp2go.com", 2525) #Fill in start #Fill in end
# Create socket called clientSocket and establish a TCP connection with mailserver
clientSocket = socket(AF_INET, SOCK_STREAM)
clientSocket.connect(mailserver)
recv = clientSocket.recv(1024)
print("Message after connection request:" + recv)
if recv[:3] != '220':
print('220 reply not received from server.')
# Send HELO command and print server response.
heloCommand = 'EHLO Alice\r\n'
clientSocket.send(heloCommand.encode())
recv1 = clientSocket.recv(1024)
print(recv1)
if recv1[:3] != '250':
print('250 reply not received from server.')
#Info for username and password
username = "abc@example.com" #the username for your server
password = "pswd" #the password for your server, changed here
base64_str = ("\x00"+username+"\x00"+password).encode()
base64_str = base64.b64encode(base64_str)
authMsg = "AUTH PLAIN ".encode()+base64_str+"\r\n".encode()
clientSocket.send(authMsg)
recv_auth = clientSocket.recv(1024)
print(recv_auth.decode())
if recv1[:3] != '250':
print('250 reply not received from server.')
# Send MAIL FROM command and print server response.
mailFrom = "MAIL FROM: <anyemailid@gmail.com> \r\n"
clientSocket.send(mailFrom.encode())
recv2 = clientSocket.recv(1024)
print("After MAIL FROM command: "+recv2)
if recv1[:3] != '250':
print('250 reply not received from server.')
# Send RCPT TO command and print server response.
rcptTo = "RCPT TO: <destination@gmail.com> \r\n"
clientSocket.send(rcptTo.encode())
recv3 = clientSocket.recv(1024)
print("After RCPT TO command: "+recv3)
if recv1[:3] != '250':
print('250 reply not received from server.')
# Send DATA command and print server response.
data = "DATA\r\n"
clientSocket.send(data.encode())
recv4 = clientSocket.recv(1024)
print("After DATA command: "+recv4)
if recv1[:3] != '250':
print('250 reply not received from server.')
# Send message data.
subject = "Subject: SMTP mail client testing \r\n\r\n"
clientSocket.send(subject.encode())
message = raw_input("Enter your message: \r\n")
clientSocket.send(message.encode())
clientSocket.send(endmsg.encode())
recv_msg = clientSocket.recv(1024)
print("Response after sending message body:"+recv_msg.decode())
if recv1[:3] != '250':
print('250 reply not received from server.')
# Send QUIT command and get server response.
clientSocket.send("QUIT\r\n".encode())
message=clientSocket.recv(1024)
print (message)
clientSocket.close()