Hi, Maybe it would make sense to alter the code a bit here: https://cwiki.apache.org/confluence/display/SPAMASSASSIN/FromNotReplyTo
and ensure that addresses are lower-cased before compared > my $from = lc $msg->get( 'From:addr' ); > my $replyTo = lc $msg->get( 'Reply-To:addr' ); Cheers -- tobi