1 files changed, 13 insertions, 2 deletions
diff --git a/Lib/smtpd.py b/Lib/smtpd.py
index 1e2adc8..bc43331 100755
--- a/Lib/smtpd.py
+++ b/Lib/smtpd.py
@@ -83,8 +83,6 @@ import errno
 import getopt
 import time
 import socket
-import asyncore
-import asynchat
 import collections
 from warnings import warn
 from email._header_value_parser import get_addr_spec, get_angle_addr
@@ -94,6 +92,19 @@ __all__ = [
     "MailmanProxy",
 ]
 
+warn(
+    'The smtpd module is deprecated and unmaintained.  Please see aiosmtpd '
+    '(https://aiosmtpd.readthedocs.io/) for the recommended replacement.',
+    DeprecationWarning,
+    stacklevel=2)
+
+
+# These are imported after the above warning so that users get the correct
+# deprecation warning.
+import asyncore
+import asynchat
+
+
 program = sys.argv[0]
 __version__ = 'Python SMTP proxy version 0.3'