diff --git a/server/lib/classes/cron.d/100-monitor_domain_mx.php b/server/lib/classes/cron.d/100-monitor_domain_mx.php
index 688f2edfa91a7b1530a68de7d7fbdaaa87fdd825..b3ed3068313ada02c12f68bfa5cec08fada357d7 100755
--- a/server/lib/classes/cron.d/100-monitor_domain_mx.php
+++ b/server/lib/classes/cron.d/100-monitor_domain_mx.php
@@ -31,7 +31,7 @@ EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 class cronjob_monitor_domain_mx  extends cronjob {
 
 	// job schedule
-	protected $_schedule = '* 6 * * *';
+	protected $_schedule = '30 6 * * *';
 	protected $_run_at_new = true;
 
 	private $_tools = null;