diff --git a/plugins/queue/smtp-forward b/plugins/queue/smtp-forward
index abb55e5..0aa7598 100644
--- a/plugins/queue/smtp-forward
+++ b/plugins/queue/smtp-forward
@@ -26,7 +26,7 @@ sub register {
   $self->register_hook("queue", "queue_handler");
 
   if (@args > 0) {
-    if ($args[0] =~ /^([\w_-]+)$/) {
+    if ($args[0] =~ /^([\.\w_-]+)$/) {
       $self->{_smtp_server} = $1;
     }
     else {