$subject =~ /$string{$prefix_set}{autoreply}/
or do { $status = 0; diag "wrong subject: $subject" };
$subject =~ /$string{$tag_set}{support}/
$subject =~ /$string{$prefix_set}{autoreply}/
or do { $status = 0; diag "wrong subject: $subject" };
$subject =~ /$string{$tag_set}{support}/