diff -Nur -x '*.orig' -x '*.rej' qpsmtpd-0.31-dev/plugins/rhsbl mezzanine_patched_qpsmtpd-0.31-dev/plugins/rhsbl
--- qpsmtpd-0.31-dev/plugins/rhsbl	2005-07-07 14:17:39.000000000 +1000
+++ mezzanine_patched_qpsmtpd-0.31-dev/plugins/rhsbl	2006-01-31 12:28:10.110140228 +1100
@@ -18,9 +18,14 @@
     #push(@hosts, $helo) if $helo && $helo ne $sender->host;
     for my $host (@hosts) {
     for my $rhsbl (keys %rhsbl_zones) {
+      if (defined($rhsbl_zones{$rhsbl})) {
         $self->log(LOGDEBUG, "Checking $host.$rhsbl for A record in the background");
         $sel->add($res->bgsend("$host.$rhsbl"));
-        $rhsbl_zones_map{"$host.$rhsbl"} = $rhsbl_zones{$rhsbl};
+      } else {
+        $self->log(LOGDEBUG, "Checking $host.$rhsbl for TXT record in the background");
+        $sel->add($res->bgsend("$host.$rhsbl", "TXT"));
+      }
+      $rhsbl_zones_map{"$host.$rhsbl"} = $rhsbl_zones{$rhsbl};
     }
   }
 
@@ -80,6 +85,10 @@
           $result = $rr->name;
           $self->log(LOGDEBUG, "A record found for $result with IP " . $rr->address);
           last;
+        } elsif ($rr->type eq 'TXT') {
+          $result = $rr->txtdata;
+          $self->log(LOGDEBUG, "TXT record found: " . $rr->txtdata);
+          last;
         }
       }
     } else {