diff -Nur smeserver-qpsmtpd-2.4.0/root/etc/e-smith/templates/var/service/qpsmtpd/config/plugins/70spamassassin smeserver-qpsmtpd-2.4.0-init_size/root/etc/e-smith/templates/var/service/qpsmtpd/config/plugins/70spamassassin
--- smeserver-qpsmtpd-2.4.0/root/etc/e-smith/templates/var/service/qpsmtpd/config/plugins/70spamassassin	2013-06-14 10:47:25.278872841 +0200
+++ smeserver-qpsmtpd-2.4.0-init_size/root/etc/e-smith/templates/var/service/qpsmtpd/config/plugins/70spamassassin	2013-06-14 10:59:23.012804098 +0200
@@ -26,9 +26,10 @@
 	push @options, "munge_subject_threshold", $spamassassin{TagLevel};
     }
 
-    if ($spamassassin{MaxMessageSize} =~ m/^\d+$/)
+    my $size = $spamassassin{MaxMessageSize} || '';
+    if ($size =~ m/^\d+$/)
     {
-        push @options, "size_limit", $spamassassin{MaxMessageSize};
+        push @options, "size_limit", $size;
     }
 
     return join " ", @options;