This upstream fix changes the informational message,

  dns: new_dns_packet: domain is utf8 flagged...

to a debug one. This should prevent it from being spammed in your logs
a million times a day.

Bug: https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7632

--- a/lib/Mail/SpamAssassin/DnsResolver.pm	2018/10/12 06:14:11	1843622
+++ b/lib/Mail/SpamAssassin/DnsResolver.pm	2018/10/12 06:38:56	1843623
@@ -547,7 +547,7 @@
   eval {
 
     if (utf8::is_utf8($domain)) {  # since Perl 5.8.1
-      info("dns: new_dns_packet: domain is utf8 flagged: %s", $domain);
+      dbg("dns: new_dns_packet: domain is utf8 flagged: %s", $domain);
     }
 
     $domain =~ s/\.*\z/./s;