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When I try send through ./manage.py shell it takes several minutes to send a single email. When I try to send a user verification email after a form submission in a browser the browser times out with a 504, but the email is eventually sent. What could be going on?
settings.py
...
EMAIL_HOST = 'smtp.gmail.com'
EMAIL_HOST_USER = '[email protected]'
EMAIL_PORT = 587
EMAIL_USE_TLS = True
DEFAULT_FROM_EMAIL = EMAIL_HOST_USER
EMAIL_HOST_PASSWORD = os.environ.get('PASSWORD')
...
views.py
class SignUpView(CreateView):
model = User
template_name = 'eventMap/register.html'
form_class = RegistrationForm
success_url="/"
def form_valid(self, form):
form.save()
username = form.cleaned_data['username']
email = form.cleaned_data['email']
salt = hashlib.sha1(str(random.random())).hexdigest()[:5]
activation_key = hashlib.sha1(salt+email).hexdigest()
key_expires = datetime.datetime.today() + datetime.timedelta(2)
#Get user by username
user=User.objects.get(username=username)
# Create and save user profile
new_profile = UserProfile(user=user, activation_key=activation_key,
key_expires=key_expires)
new_profile.save()
# Send email with activation key
email_subject = 'Account confirmation'
email_body = "Hey %s, thanks for signing up. To activate your account, click this link within \
48hours http://mywebsite.com/accounts/confirm/%s" % (username, activation_key)
send_mail(email_subject, email_body, '[email protected]',
['[email protected]'], fail_silently=False)
return super(SignUpView, self).form_valid(form)
I came across this post about something similar but the logs don't mention anything about an unqualified hostname etc /var/log/mail.log
Jul 27 16:26:04 django postfix/qmgr[5975]: CAF7C1226F2: from=<>, size=3063, nrcpt=1 (queue active)
Jul 27 16:26:34 django postfix/smtp[12874]: connect to example.com[2606:2800:220:1:248:1893:25c8:1946]:25: Connection timed out
Jul 27 16:27:04 django postfix/smtp[12874]: connect to example.com[93.184.216.34]:25: Connection timed out
Jul 27 16:27:04 django postfix/smtp[12874]: CAF7C1226F2: to=<[email protected]>, relay=none, delay=368178, delays=368118/0.02/60/0, dsn=4.4.1, status=deferred (connect to example.com[93.184.216.34]:25: Connection timed out)
355
send_mail() method is imported from django. The send_mail() method handles the transmission of Emails. There are some important parameters of send_mail(), which we have defined here: subject: Contains the subject part of the Email. message: Contains the Email body.
How to send multiple mass emails django. We need to create a Tuple of messages and send them using send mass mail. In this tutorial, we create a project which sends email using Django. We fill the data in the form and send it using Django Email.
In most cases, you can send email using django. core. mail. send_mail() .
I had a similar case where the delay and timeout were caused by the system trying to connect to gmail over IPv6.
This thread was useful in uncovering the mystery.
TLDR:
On the host machine try using telnet to connect to gmail.
telnet smtp.gmail.com 587
If it first attempts to connect over IPv6 (and blocks for a few minutes) followed by a successful connection on IPv4, then this is likely your problem.
The solution:
import socket
EMAIL_HOST = socket.gethostbyname('smtp.gmail.com')
This ensures that python will connect to gmail over IPv4 from the beginning.
Better solution:
Figure out why your host can't connect to gmail over IPv6 and fix that issue. Perhaps adjusting firewall rules to reject packets instead of dropping them.
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