diff --git a/debian/patches/31_checl_mailq_separate_submission_queue b/debian/patches/31_checl_mailq_separate_submission_queue
new file mode 100644
index 0000000..51bdd78
--- /dev/null
+++ b/debian/patches/31_checl_mailq_separate_submission_queue
@@ -0,0 +1,77 @@
+From 12ae1fb6627bfef419fb4571a7189909107f5e6e Mon Sep 17 00:00:00 2001
+From: Jan Wagner <waja@cyconet.org>
+Date: Tue, 1 Oct 2013 15:06:51 +0200
+Subject: [PATCH] check_mailq.pl: separate submission queue
+
+check_mailq.pl ignores the separate submission queue used in (modern?) sendmail
+implementations.
+
+For the queue output below with one message in the submission queue and no
+messages in the transport queue, check_mailq.pl reports zero messages in the
+queue because the request count from the last queue always overwrites previous
+queues. If the sendmail MTA isn't running or has become wedged, messages will
+sit in the submission queue forever.
+
+The attached patch fixes this in a backwards compatible way (i.e., it shouldn't
+break any of the currently supported formats).
+--
+Just turning attached patch of github issue #972 into a push request.
+(Closes #972)
+---
+
+diff --git a/plugins-scripts/check_mailq.pl b/plugins-scripts/check_mailq.pl
+index 27073d3cc..f02c90fbc 100755
+--- a/plugins-scripts/check_mailq.pl
++++ b/plugins-scripts/check_mailq.pl
+@@ -149,7 +149,26 @@
+ ##/var/spool/mqueue/qF/df is empty
+ ##                Total Requests: 1
+ 
+-	
++# separate submission/transport queues, empty
++## MSP Queue status...
++## /var/spool/mqueue-client is empty
++##                 Total requests: 0
++## MTA Queue status...
++## /var/spool/mqueue is empty
++##                 Total requests: 0
++# separate submission/transport queues: 1
++## MSP Queue status...
++##                 /var/spool/mqueue-client (1 request)
++## -----Q-ID----- --Size-- -----Q-Time----- ------------Sender/Recipient-----------
++## oAJEfhdW014123        5 Fri Nov 19 14:41 jwm
++##                  (Deferred: Connection refused by [127.0.0.1])
++##                                          root
++##                 Total requests: 1
++## MTA Queue status...
++## /var/spool/mqueue is empty
++##                 Total requests: 0
++
++	my $this_msg_q = 0;
+ 	while (<MAILQ>) {
+ 	
+ 		# match email addr on queue listing
+@@ -189,13 +208,18 @@
+ 	    	#
+ 		    # single queue: first line
+ 		    # multi queue: one for each queue. overwrite on multi queue below
+-	  	  $msg_q = $1 ;
++		  $this_msg_q = $1 ;
++	  	  $msg_q += $1 ;
+ 			}
+ 		} elsif (/^\s+Total\sRequests:\s(\d+)$/i) {
+-			print "$utils::PATH_TO_MAILQ = $_ \n" if $verbose ;
+-			#
+-			# multi queue: last line
+-			$msg_q = $1 ;
++			if ($this_msg_q) {
++				$this_msg_q = 0 ;
++			} else {
++				print "$utils::PATH_TO_MAILQ = $_ \n" if $verbose ;
++				#
++				# multi queue: last line
++				$msg_q += $1 ;
++			}
+ 		}
+ 	
+ 	}
diff --git a/debian/patches/series b/debian/patches/series
index a89e3a5..6700b35 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -8,3 +8,4 @@
 14_check_curl_fix_SSL_with_multiple_IPs
 # feature patches
 30_check_radius_radcli_1.3.1_support
+31_checl_mailq_separate_submission_queue