fix mail sending

(transplanted from f2e0374024d9d85f77cacb58c8a0b9029ed1ac1c)

vispa/__init__.py

@@ -298,6 +298,13 @@ def send_mail(addr, subject="", content="", sender_addr=None, smtp_host=None,
     and UTF-8 that can represent all the characters occurring in the email.
     """
 
+    if smtp_host is None:
+        smtp_host = config("mail", "smtp.host", "localhost")
+    if smtp_port is None:
+        smtp_host = config("mail", "smtp.port", 0)
+    if sender_addr is None:
+        sender_addr = config("mail", "sender_address", "noreply@example.org")
+
     # Header class is smart enough to try US-ASCII, then the charset we
     # provide, then fall back to UTF-8.
     header_charset = 'ISO-8859-1'
@@ -331,7 +338,7 @@ def send_mail(addr, subject="", content="", sender_addr=None, smtp_host=None,
     msg['Subject'] = Header(unicode(subject), header_charset)
 
     # Send the message via SMTP to localhost:25
-    smtp = SMTP("localhost")
+    smtp = SMTP(smtp_host, smtp_port)
     smtp.sendmail(sender_addr, addr, msg.as_string())
     smtp.quit()