Refs -- Used smtplib's context parameter instead of keyfile and certfile.
keyfile and certfile parameters were removed in Python 3.12, see
@@ -7,6 +7,7 @@ from django.conf import settings
from django.core.mail.backends.base import BaseEmailBackend
from django.core.mail.message import sanitize_address
from django.core.mail.utils import DNS_NAME
+from django.utils.functional import cached_property
class EmailBackend(BaseEmailBackend):
@@ -54,6 +55,13 @@ class EmailBackend(BaseEmailBackend):
def connection_class(self):
return smtplib.SMTP_SSL if self.use_ssl else smtplib.SMTP
+ @cached_property
+ def ssl_context(self):
+ ssl_context = ssl.SSLContext(protocol=ssl.PROTOCOL_TLS_CLIENT)
+ if self.ssl_certfile or self.ssl_keyfile:
+ ssl_context.load_cert_chain(self.ssl_certfile, self.ssl_keyfile)
+ return ssl_context
+
def open(self):
"""
Ensure an open connection to the email server. Return whether or not a
@@ -70,12 +78,7 @@ class EmailBackend(BaseEmailBackend):
if self.timeout is not None:
connection_params["timeout"] = self.timeout
if self.use_ssl:
- connection_params.update(
- {
- "keyfile": self.ssl_keyfile,
- "certfile": self.ssl_certfile,
- }
- )
+ connection_params["context"] = self.ssl_context
try:
self.connection = self.connection_class(
self.host, self.port, **connection_params
@@ -84,9 +87,7 @@ class EmailBackend(BaseEmailBackend):
# TLS/SSL are mutually exclusive, so only attempt TLS over
# non-secure connections.
if not self.use_ssl and self.use_tls:
- self.connection.starttls(
- keyfile=self.ssl_keyfile, certfile=self.ssl_certfile
- )
+ self.connection.starttls(context=self.ssl_context)
if self.username and self.password:
self.connection.login(self.username, self.password)
return True
