Created
January 21, 2019 10:08
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import dns.resolver | |
import socket | |
import ssl | |
FROM_ADDR = 'cynthia@example.com' | |
TO_ADDR = 'meow@example.com' | |
msg_helo = 'HELO msg\r\n' | |
msg_from = 'MAIL FROM:<{}>\r\n' | |
msg_rcpt = 'RCPT TO:<{}>\r\n' | |
msg_starttls = 'STARTTLS\r\n' | |
msg_quit = 'QUIT\r\n' | |
msg_data = 'DATA\r\n' | |
msg_content = """From: <{}> | |
To: <{}> | |
Date: Mon, 25 January 2019 4:20:00 -0000 | |
Subject: {} | |
{} | |
. | |
""" | |
context = ssl.create_default_context() | |
def get_host(addr): | |
parts = addr.split('@') | |
mx = dns.resolver.query(parts[1], 'MX') | |
for m in mx: | |
print(m) | |
return str(mx[0].exchange)[:-1] | |
def recv(s): | |
d = s.recv(1024) | |
print(d.decode('ascii')) | |
return d | |
def send(s, msg): | |
print(msg) | |
s.send(msg.encode('ascii')) | |
def send_email(to_addr, from_addr, content, subject, use_starttls=False, port=25): | |
to_host = get_host(to_addr) | |
print(to_host) | |
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) | |
s.settimeout(2) | |
s.connect((to_host, port)) | |
recv(s) | |
send(s, msg_helo) | |
recv(s) | |
if use_starttls: | |
send(s, msg_starttls) | |
recv(s) | |
s = context.wrap_socket(s, server_hostname=to_host) | |
send(s, msg_from.format(from_addr)) | |
recv(s) | |
send(s, msg_rcpt.format(to_addr)) | |
recv(s) | |
send(s, msg_data) | |
recv(s) | |
send(s, msg_content.format(from_addr, to_addr, subject, content)) | |
send(s, msg_quit) | |
s.close() | |
send_email(TO_ADDR, FROM_ADDR, 'hi', 'hello') |
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