diff --git a/lib/Qpsmtpd/Postfix.pm b/lib/Qpsmtpd/Postfix.pm
index 2946bba..6a98816 100644
--- a/lib/Qpsmtpd/Postfix.pm
+++ b/lib/Qpsmtpd/Postfix.pm
@@ -206,7 +206,7 @@ sub inject_mail {
 
     my $hdr = $transaction->header->as_string;
     for (split(/\r?\n/, $hdr)) {
-        print STDERR "hdr: $_\n";
+        # print STDERR "hdr: $_\n";
         $strm->print_msg_line($_);
     }
     $transaction->body_resetpos;