use lowercase [smtp] as written in the docs

isso/core.py

@@ -93,7 +93,7 @@ class Config:
         "purge-after = 30d",
         "[server]",
         "host = localhost", "port = 8080", "reload = off",
-        "[SMTP]",
+        "[smtp]",
         "username = ", "password = ",
         "host = localhost", "port = 465", "ssl = on",
         "to = ", "from = ",

isso/notify.py

@@ -41,12 +41,12 @@ class Connection(object):
         self.conf = conf
 
     def __enter__(self):
-        self.server = (SMTP_SSL if self.conf.getboolean('SMTP', 'ssl') else SMTP)(
-            host=self.conf.get('SMTP', 'host'), port=self.conf.getint('SMTP', 'port'))
+        self.server = (SMTP_SSL if self.conf.getboolean('smtp', 'ssl') else SMTP)(
+            host=self.conf.get('smtp', 'host'), port=self.conf.getint('smtp', 'port'))
 
-        if self.conf.get('SMTP', 'username') and self.conf.get('SMTP', 'password'):
-            self.server.login(self.conf.get('SMTP', 'username'),
-                              self.conf.get('SMTP', 'password'))
+        if self.conf.get('smtp', 'username') and self.conf.get('smtp', 'password'):
+            self.server.login(self.conf.get('smtp', 'username'),
+                              self.conf.get('smtp', 'password'))
 
         return self.server
 
@@ -59,8 +59,8 @@ class SMTPMailer(object):
     def __init__(self, conf):
 
         self.conf = conf
-        self.from_addr = conf.get('SMTP', 'from')
-        self.to_addr = conf.get('SMTP', 'to')
+        self.from_addr = conf.get('smtp', 'from')
+        self.to_addr = conf.get('smtp', 'to')
 
         # test SMTP connectivity
         with Connection(self.conf):