diff -Nur qpsmtpd-0.96/plugins/uribl qpsmtpd-0.96_bz9467/plugins/uribl
--- qpsmtpd-0.96/plugins/uribl	2016-07-11 22:28:55.105488861 +0200
+++ qpsmtpd-0.96_bz9467/plugins/uribl	2016-07-11 22:32:14.607442677 +0200
@@ -96,6 +96,9 @@
 
 use Time::HiRes qw(time);
 use IO::Select;
+use Data::Validate::Domain;
+
+my $v = Data::Validate::Domain->new;
 
 # ccTLDs that allocate domain names within a strict two-level hierarchy,
 # as in *.co.uk
@@ -348,7 +351,7 @@
                 museum|name|net|org|pro|tel|travel|
                 [a-zA-Z]{2})
             )(?!\w)        
-            }gix
+            }gix && $v->is_domain($1)
               )
         {
             my $host = lc $1;
@@ -393,7 +396,7 @@
                 museum|name|net|org|pro|tel|travel|
                 [a-zA-Z]{2})
             )
-            }gix
+            }gix && $v->is_domain($1)
               )
         {
             my $host = lc $1;