100 lines
3.0 KiB
Python
Executable File
100 lines
3.0 KiB
Python
Executable File
#!/usr/bin/python3
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# Tests sending and receiving mail by sending a test message to yourself.
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import sys, imaplib, smtplib, uuid, time
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import socket, dns.reversename, dns.resolver
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if len(sys.argv) < 3:
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print("Usage: tests/mail.py hostname emailaddress password")
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sys.exit(1)
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host, emailaddress, pw = sys.argv[1:4]
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# Attempt to login with IMAP. Our setup uses email addresses
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# as IMAP/SMTP usernames.
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M = imaplib.IMAP4_SSL(host)
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M.login(emailaddress, pw)
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M.select()
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print("IMAP login is OK.")
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# Attempt to send a mail to ourself.
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mailsubject = "Mail-in-a-Box Automated Test Message " + uuid.uuid4().hex
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emailto = emailaddress
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msg = """From: {emailaddress}
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To: {emailto}
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Subject: {subject}
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This is a test message. It should be automatically deleted by the test script.""".format(
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emailaddress=emailaddress,
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emailto=emailto,
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subject=mailsubject,
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)
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# Connect to the server on the SMTP submission TLS port.
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server = smtplib.SMTP(host, 587)
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#server.set_debuglevel(1)
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server.starttls()
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# Verify that the EHLO name matches the server's reverse DNS.
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ipaddr = socket.gethostbyname(host) # IPv4 only!
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reverse_ip = dns.reversename.from_address(ipaddr) # e.g. "1.0.0.127.in-addr.arpa."
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try:
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reverse_dns = dns.resolver.query(reverse_ip, 'PTR')[0].target.to_text(omit_final_dot=True) # => hostname
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except dns.resolver.NXDOMAIN:
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print("Reverse DNS lookup failed for %s. SMTP EHLO name check skipped." % ipaddr)
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reverse_dns = None
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if reverse_dns is not None:
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server.ehlo_or_helo_if_needed() # must send EHLO before getting the server's EHLO name
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helo_name = server.ehlo_resp.decode("utf8").split("\n")[0] # first line is the EHLO name
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if helo_name != reverse_dns:
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print("The server's EHLO name does not match its reverse hostname. Check DNS settings.")
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sys.exit(1)
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print("SMTP EHLO name (%s) is OK." % helo_name)
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# Login and send a test email.
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server.login(emailaddress, pw)
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server.sendmail(emailaddress, [emailto], msg)
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server.quit()
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print("SMTP submission is OK.")
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while True:
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# Wait so the message can propagate to the inbox.
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time.sleep(10)
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# Read the subject lines of all of the emails in the inbox
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# to find our test message, and then delete it.
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found = False
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typ, data = M.search(None, 'ALL')
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for num in data[0].split():
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typ, data = M.fetch(num, '(BODY[HEADER.FIELDS (SUBJECT)])')
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imapsubjectline = data[0][1].strip().decode("utf8")
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if imapsubjectline == "Subject: " + mailsubject:
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# We found our test message.
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found = True
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# To test DKIM, download the whole mssage body. Unfortunately,
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# pydkim doesn't actually work.
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# You must 'sudo apt-get install python3-dkim python3-dnspython' first.
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#typ, msgdata = M.fetch(num, '(RFC822)')
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#msg = msgdata[0][1]
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#if dkim.verify(msg):
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# print("DKIM signature on the test message is OK (verified).")
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#else:
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# print("DKIM signature on the test message failed verification.")
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# Delete the test message.
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M.store(num, '+FLAGS', '\\Deleted')
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M.expunge()
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break
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if found:
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break
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print("Test message not present in the inbox yet...")
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M.close()
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M.logout()
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print("Test message sent & received successfully.")
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