diff --git a/resources/default_tweaks.py b/resources/default_tweaks.py
index e36b98d201..ba6c80d234 100644
--- a/resources/default_tweaks.py
+++ b/resources/default_tweaks.py
@@ -468,7 +468,7 @@ metadata_edit_elision_point = 'right'
 # to be public relays here. Any relay host ending with one of the suffixes
 # in the list below will be considered a public email server.
 public_smtp_relay_delay = 301
-public_smtp_relay_host_suffixes = ['gmail.com', 'live.com', 'gmx.com']
+public_smtp_relay_host_suffixes = ['gmail.com', 'live.com', 'gmx.com', 'outlook.com']
 
 #: The maximum width and height for covers saved in the calibre library
 # All covers in the calibre library will be resized, preserving aspect ratio,
diff --git a/src/calibre/gui2/wizard/send_email.py b/src/calibre/gui2/wizard/send_email.py
index 8b43f52b9b..bb1f83db32 100644
--- a/src/calibre/gui2/wizard/send_email.py
+++ b/src/calibre/gui2/wizard/send_email.py
@@ -249,7 +249,7 @@ class SendEmail(QWidget, Ui_Form):
                 },
                 'hotmail': {
                     'name': 'Hotmail',
-                    'relay': 'smtp.live.com',
+                    'relay': 'smtp-mail.outlook.com',
                     'port': 587,
                     'username': '',
                     'url': 'www.hotmail.com',