(This is a copy of the comment I left in OBS) Are you sure that it is already fixed by bsc#1059210 and there has not been a regression ? Looking at "/usr/lib/perl5/vendor_perl/5.26.1/Mail/SpamAssassin/DnsResolver.pm" on my LEAP15 instance, I do not see https://svn.apache.org/viewvc/spamassassin/branches/3.4/lib/Mail/SpamAssassin/DnsResolver.pm?r1=1691992&r2=1691991&pathrev=1691992. (i.e. there is no "$packet->header->rd(1);" underneath "if ($packet)" around line 592)