diff --git a/pkg/backends/otlp/backend.go b/pkg/backends/otlp/backend.go
index 1e3c2ad9..3927fdbe 100644
--- a/pkg/backends/otlp/backend.go
+++ b/pkg/backends/otlp/backend.go
@@ -145,10 +145,10 @@ func (bd *Backend) SendMetricsAsync(ctx context.Context, mm *gostatsd.MetricMap,
 	currentGroup := newGroups(bd.metricsPerBatch)
 
 	mm.Counters.Each(func(name, _ string, cm gostatsd.Counter) {
-		resources, attributes := data.SplitMetricTagsByKeysAndConvert(cm.Tags, bd.resourceKeys)
-		if cm.Source != "" {
-			attributes.Insert("source", string(cm.Source))
+		if !cm.Tags.Exists("host") && cm.Source != "" {
+			cm.Tags.Concat(gostatsd.Tags{"host:" + string(cm.Source)})
 		}
+		resources, attributes := data.SplitMetricTagsByKeysAndConvert(cm.Tags, bd.resourceKeys)
 
 		rate := data.NewMetric(name).SetGauge(
 			data.NewGauge(
@@ -175,10 +175,10 @@ func (bd *Backend) SendMetricsAsync(ctx context.Context, mm *gostatsd.MetricMap,
 	})
 
 	mm.Gauges.Each(func(name, _ string, gm gostatsd.Gauge) {
-		resources, attributes := data.SplitMetricTagsByKeysAndConvert(gm.Tags, bd.resourceKeys)
-		if gm.Source != "" {
-			attributes.Insert("source", string(gm.Source))
+		if !gm.Tags.Exists("host") && gm.Source != "" {
+			gm.Tags.Concat(gostatsd.Tags{"host:" + string(gm.Source)})
 		}
+		resources, attributes := data.SplitMetricTagsByKeysAndConvert(gm.Tags, bd.resourceKeys)
 
 		m := data.NewMetric(name).SetGauge(
 			data.NewGauge(
@@ -194,10 +194,10 @@ func (bd *Backend) SendMetricsAsync(ctx context.Context, mm *gostatsd.MetricMap,
 	})
 
 	mm.Sets.Each(func(name, _ string, sm gostatsd.Set) {
-		resources, attributes := data.SplitMetricTagsByKeysAndConvert(sm.Tags, bd.resourceKeys)
-		if sm.Source != "" {
-			attributes.Insert("source", string(sm.Source))
+		if !sm.Tags.Exists("host") && sm.Source != "" {
+			sm.Tags.Concat(gostatsd.Tags{"host:" + string(sm.Source)})
 		}
+		resources, attributes := data.SplitMetricTagsByKeysAndConvert(sm.Tags, bd.resourceKeys)
 
 		m := data.NewMetric(name).SetGauge(
 			data.NewGauge(
@@ -213,10 +213,10 @@ func (bd *Backend) SendMetricsAsync(ctx context.Context, mm *gostatsd.MetricMap,
 	})
 
 	mm.Timers.Each(func(name, _ string, t gostatsd.Timer) {
-		resources, attributes := data.SplitMetricTagsByKeysAndConvert(t.Tags, bd.resourceKeys)
-		if t.Source != "" {
-			attributes.Insert("source", string(t.Source))
+		if !t.Tags.Exists("host") && t.Source != "" {
+			t.Tags.Concat(gostatsd.Tags{"host:" + string(t.Source)})
 		}
+		resources, attributes := data.SplitMetricTagsByKeysAndConvert(t.Tags, bd.resourceKeys)
 
 		switch bd.convertTimersToGauges {
 		case true:
diff --git a/pkg/backends/otlp/backend_test.go b/pkg/backends/otlp/backend_test.go
index 74709bce..93f08093 100644
--- a/pkg/backends/otlp/backend_test.go
+++ b/pkg/backends/otlp/backend_test.go
@@ -326,7 +326,7 @@ func TestBackendSendAsyncMetrics(t *testing.T) {
 				ms := req.GetResourceMetrics()[0].GetScopeMetrics()[0].GetMetrics()
 				dpCountAttrs := ms[1].GetSum().DataPoints[0].GetAttributes()
 				for _, attr := range dpCountAttrs {
-					if attr.Key == "source" {
+					if attr.Key == "host" {
 						assert.Equal(t, "fake-source", attr.Value.GetStringValue())
 						return
 					}
@@ -369,7 +369,7 @@ func TestBackendSendAsyncMetrics(t *testing.T) {
 				ms := req.GetResourceMetrics()[0].GetScopeMetrics()[0].GetMetrics()
 				dpCountAttrs := ms[1].GetSum().DataPoints[0].GetAttributes()
 				for _, attr := range dpCountAttrs {
-					if attr.Key == "source" {
+					if attr.Key == "host" {
 						assert.Error(t, fmt.Errorf("source attribute not found"))
 						return
 					}
diff --git a/tags.go b/tags.go
index 3fce0628..ca4d9c10 100644
--- a/tags.go
+++ b/tags.go
@@ -56,6 +56,17 @@ func (tags Tags) Copy() Tags {
 	return tagCopy
 }
 
+// Exists returns true if the tag exists in the tags
+func (tags Tags) Exists(tag string) bool {
+	for _, t := range tags {
+		key, _ := parseTag(t)
+		if key == tag {
+			return true
+		}
+	}
+	return false
+}
+
 // ToMap converts all the tags into a format that can be translated
 // to send to a different vendor if required.
 // - If the tag exists without a value it is converted to: "unknown:<tag>"
diff --git a/tags_test.go b/tags_test.go
index 5346d672..7b10ce71 100644
--- a/tags_test.go
+++ b/tags_test.go
@@ -37,3 +37,11 @@ func TestTagsToMap(t *testing.T) {
 		})
 	}
 }
+
+func TestTagsExist(t *testing.T) {
+	t.Parallel()
+	tags := Tags{"a:b", "c:d"}
+	assert.True(t, tags.Exists("a"))
+	assert.True(t, tags.Exists("c"))
+	assert.False(t, tags.Exists("e"))
+}