1 files changed, 2 insertions, 1 deletions
diff --git a/Lib/smtplib.py b/Lib/smtplib.py
index 7808ba0..f047231 100755
--- a/Lib/smtplib.py
+++ b/Lib/smtplib.py
@@ -1082,7 +1082,8 @@ class LMTP(SMTP):
         # Handle Unix-domain sockets.
         try:
             self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-            self.sock.settimeout(self.timeout)
+            if self.timeout is not socket._GLOBAL_DEFAULT_TIMEOUT:
+                self.sock.settimeout(self.timeout)
             self.file = None
             self.sock.connect(host)
         except OSError: