Support SMTP TLS (for Gmail)

qpsmtpd-smtp-tls-forward.patch

diff --git a/plugins/queue/smtp-forward b/plugins/queue/smtp-forward
index f7e212b..00f42a1 100644
--- a/plugins/queue/smtp-forward
+++ b/plugins/queue/smtp-forward
@@ -35,7 +35,11 @@ sub init {
     if (@args > 1 and $args[1] =~ /^(\d+)$/) {
       $self->{_smtp_port} = $1;
     }
-    $self->log(LOGWARN, "WARNING: Ignoring additional arguments.") if (@args > 2);
+    if (@args > 2 and $args[2] && $args[3]) {
+      $self->{_smtp_user} = $args[2];
+      $self->{_smtp_pass} = $args[3];
+    }
+#    $self->log(LOGWARN, "WARNING: Ignoring additional arguments.") if (@args > 2);
   } else {
     die("No SMTP server specified in smtp-forward config");
   }
@@ -46,7 +50,9 @@ sub hook_queue {
   my ($self, $transaction) = @_;
 
   $self->log(LOGINFO, "forwarding to $self->{_smtp_server}:$self->{_smtp_port}");
-  my $smtp = Net::SMTP->new(
+  my $class = $self->{_smtp_port} == 465 ? "Net::SMTP::TLS" : "Net::SMTP";
+  eval "require $class" or die $@;
+  my $smtp = $class->new(
                             $self->{_smtp_server},
                             Port => $self->{_smtp_port},
                             Timeout => 60,