File DNS-resolver-recursion-desired-not-set.patch of Package spamassassin

--- Mail-SpamAssassin-3.4.1/lib/Mail/SpamAssassin/DnsResolver.pm.orig	2018-01-18 09:33:58.566828560 +0100
+++ Mail-SpamAssassin-3.4.1/lib/Mail/SpamAssassin/DnsResolver.pm	2018-01-18 09:32:47.765978605 +0100
@@ -575,6 +575,7 @@
                 { $1 eq '\\' ? "\\$1" : sprintf("\\%03d",ord($1)) }xgse;
 
     $packet = Net::DNS::Packet->new($domain, $type, $class);
+    $packet->header->rd(1);
 
     # a bit noisy, so commented by default...
     #dbg("dns: new DNS packet time=%.3f domain=%s type=%s id=%s",