From a0539941cee87eb89f98b1016055cbf45a373600 Mon Sep 17 00:00:00 2001
From: Giovanni <g.bechis@snb.it>
Date: Wed, 29 Jan 2025 08:30:15 +0100
Subject: [PATCH] RFC7489 6.6.1 states that "group" syntax, are typically
 ignored

---
 lib/Mail/DMARC/Base.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Mail/DMARC/Base.pm b/lib/Mail/DMARC/Base.pm
index 27c1c9d5..7a0cb7a6 100644
--- a/lib/Mail/DMARC/Base.pm
+++ b/lib/Mail/DMARC/Base.pm
@@ -283,7 +283,7 @@ sub is_valid_domain {
     return 0 if $domain !~ /^$RE{net}{domain}{-rfc1101}{-nospace}$/x;
     my $tld = ( split /\./, lc $domain )[-1];
     return 1 if $self->is_public_suffix($tld);
-    return 1 if $domain eq 'localhost';
+    return 0 if lc $domain eq 'localhost';
     $tld = join( '.', ( split /\./, $domain )[ -2, -1 ] );
     return 1 if $self->is_public_suffix($tld);
     return 0;