diff --git a/federationapi/routing/send.go b/federationapi/routing/send.go
index 903a2f22c..f85da148c 100644
--- a/federationapi/routing/send.go
+++ b/federationapi/routing/send.go
@@ -218,7 +218,9 @@ func (t *txnReq) processTransaction() (*gomatrixserverlib.RespSend, *util.JSONRe
 	}
 
 	t.processEDUs(t.EDUs)
-	util.GetLogger(t.context).Infof("Processed %d PDUs from transaction %q", len(results), t.TransactionID)
+	if c := len(results); c > 0 {
+		util.GetLogger(t.context).Infof("Processed %d PDUs from transaction %q", c, t.TransactionID)
+	}
 	return &gomatrixserverlib.RespSend{PDUs: results}, nil
 }
 
@@ -315,7 +317,7 @@ func (t *txnReq) processEDUs(edus []gomatrixserverlib.EDU) {
 		case gomatrixserverlib.MDeviceListUpdate:
 			t.processDeviceListUpdate(e)
 		default:
-			util.GetLogger(t.context).WithField("type", e.Type).Warn("unhandled edu")
+			util.GetLogger(t.context).WithField("type", e.Type).Debug("Unhandled EDU")
 		}
 	}
 }
diff --git a/federationsender/queue/destinationqueue.go b/federationsender/queue/destinationqueue.go
index dc2d40910..aedaeab1f 100644
--- a/federationsender/queue/destinationqueue.go
+++ b/federationsender/queue/destinationqueue.go
@@ -255,7 +255,7 @@ func (oq *destinationQueue) backgroundSend() {
 			// The worker is idle so stop the goroutine. It'll get
 			// restarted automatically the next time we have an event to
 			// send.
-			log.Infof("Queue %q has been idle for %s, going to sleep", oq.destination, queueIdleTimeout)
+			log.Debugf("Queue %q has been idle for %s, going to sleep", oq.destination, queueIdleTimeout)
 			return
 		}
 
@@ -263,12 +263,12 @@ func (oq *destinationQueue) backgroundSend() {
 		// backoff duration to complete first, or until explicitly
 		// told to retry.
 		if backoff, duration := oq.statistics.BackoffDuration(); backoff {
-			log.WithField("duration", duration).Infof("Backing off %s", oq.destination)
+			log.WithField("duration", duration).Debugf("Backing off %s", oq.destination)
 			oq.backingOff.Store(true)
 			select {
 			case <-time.After(duration):
 			case <-oq.interruptBackoff:
-				log.Infof("Interrupting backoff for %q", oq.destination)
+				log.Debugf("Interrupting backoff for %q", oq.destination)
 			}
 			oq.backingOff.Store(false)
 		}
@@ -414,7 +414,7 @@ func (oq *destinationQueue) nextTransaction() (bool, error) {
 		t.EDUs = append(t.EDUs, *edu)
 	}
 
-	logrus.WithField("server_name", oq.destination).Infof("Sending transaction %q containing %d PDUs, %d EDUs", t.TransactionID, len(t.PDUs), len(t.EDUs))
+	logrus.WithField("server_name", oq.destination).Debugf("Sending transaction %q containing %d PDUs, %d EDUs", t.TransactionID, len(t.PDUs), len(t.EDUs))
 
 	// Try to send the transaction to the destination server.
 	// TODO: we should check for 500-ish fails vs 400-ish here,
diff --git a/federationsender/queue/queue.go b/federationsender/queue/queue.go
index 5651fba26..6d5403e82 100644
--- a/federationsender/queue/queue.go
+++ b/federationsender/queue/queue.go
@@ -136,7 +136,7 @@ func (oqs *OutgoingQueues) SendEvent(
 
 	log.WithFields(log.Fields{
 		"destinations": destinations, "event": ev.EventID(),
-	}).Info("Sending event")
+	}).Infof("Sending event")
 
 	headeredJSON, err := json.Marshal(ev)
 	if err != nil {