diff -r 2fdc9cc89502 -r 2ff819fa5be1 org/sonews/mlgw/SMTPTransport.java
--- a/org/sonews/mlgw/SMTPTransport.java	Wed Jul 22 14:04:05 2009 +0200
+++ b/org/sonews/mlgw/SMTPTransport.java	Wed Aug 26 17:04:04 2009 +0200
@@ -84,6 +84,10 @@
   public void send(Article article, String mailFrom, String rcptTo)
     throws IOException
   {
+    assert(article != null);
+    assert(mailFrom != null);
+    assert(rcptTo != null);
+
     this.out.println("MAIL FROM: " + mailFrom);
     this.out.flush();
     String line = this.in.readLine();