diff --git a/handle.go b/handle.go
index 535d08f..dc1718e 100644
--- a/handle.go
+++ b/handle.go
@@ -125,6 +125,14 @@ func followAcceptable(activity *activitypub.Activity, actor *activitypub.Actor)
 	}
 }
 
+func unFollowAcceptable(activity *activitypub.Activity, actor *activitypub.Actor) error {
+	if contains(activity.Object, "https://www.w3.org/ns/activitystreams#Public") {
+		return nil
+	} else {
+		return errors.New("Unfollow only allowed for https://www.w3.org/ns/activitystreams#Public")
+	}
+}
+
 func suitableFollow(activity *activitypub.Activity, actor *activitypub.Actor) bool {
 	domain, _ := url.Parse(activity.Actor)
 	blocked, _ := redClient.HExists("relay:config:blockedDomain", domain.Host).Result()
@@ -171,8 +179,10 @@ func handleInbox(w http.ResponseWriter, r *http.Request, activityDecoder func(*h
 			case "Follow":
 				err = followAcceptable(activity, actor)
 				if err != nil {
-					w.WriteHeader(400)
-					w.Write([]byte(err.Error()))
+					resp := activitypub.GenerateActivityResponse(hostname, domain, "Reject", *activity)
+					jsonData, _ := json.Marshal(&resp)
+					go pushRegistorJob(actor.Inbox, jsonData)
+					fmt.Println("Reject Follow Request : ", err.Error(), activity.Actor)
 				} else {
 					if suitableFollow(activity, actor) {
 						if relConfig.ManuallyAccept {
@@ -201,14 +211,24 @@ func handleInbox(w http.ResponseWriter, r *http.Request, activityDecoder func(*h
 					w.WriteHeader(202)
 					w.Write(nil)
 				}
+
+				w.WriteHeader(202)
+				w.Write(nil)
 			case "Undo":
 				nestedActivity, _ := activitypub.DescribeNestedActivity(activity.Object)
 				if nestedActivity.Type == "Follow" && nestedActivity.Actor == activity.Actor {
-					redClient.Del("relay:subscription:" + domain.Host)
-					fmt.Println("Accept Unfollow Request : ", activity.Actor)
+					err = unFollowAcceptable(nestedActivity, actor)
+					if err != nil {
+						fmt.Println("Reject Unfollow Request : ", err.Error())
+						w.WriteHeader(400)
+						w.Write([]byte(err.Error()))
+					} else {
+						redClient.Del("relay:subscription:" + domain.Host)
+						fmt.Println("Accept Unfollow Request : ", activity.Actor)
 
-					w.WriteHeader(202)
-					w.Write(nil)
+						w.WriteHeader(202)
+						w.Write(nil)
+					}
 				} else {
 					err = relayAcceptable(activity, actor)
 					if err != nil {
diff --git a/handle_test.go b/handle_test.go
index 34a7b09..a5eabca 100644
--- a/handle_test.go
+++ b/handle_test.go
@@ -185,6 +185,11 @@ func mockActivity(req string) activitypub.Activity {
 		var activity activitypub.Activity
 		json.Unmarshal([]byte(body), &activity)
 		return activity
+	case "UnfollowAsActor":
+		body := "{\"@context\":\"https://www.w3.org/ns/activitystreams\",\"id\":\"https://mastodon.test.yukimochi.io/c125e836-e622-478e-a22d-2d9fbf2f496f\",\"type\":\"Undo\",\"actor\":\"https://mastodon.test.yukimochi.io/users/yukimochi\",\"object\":{\"@context\":\"https://www.w3.org/ns/activitystreams\",\"id\":\"https://hacked.test.yukimochi.io/c125e836-e622-478e-a22d-2d9fbf2f496f\",\"type\":\"Follow\",\"actor\":\"https://mastodon.test.yukimochi.io/users/yukimochi\",\"object\":\"https://relay.yukimochi.example.org/actor\"}}"
+		var activity activitypub.Activity
+		json.Unmarshal([]byte(body), &activity)
+		return activity
 	case "Create":
 		body := "{\"@context\":[\"https://www.w3.org/ns/activitystreams\",\"https://w3id.org/security/v1\",{\"manuallyApprovesFollowers\":\"as:manuallyApprovesFollowers\",\"sensitive\":\"as:sensitive\",\"movedTo\":{\"@id\":\"as:movedTo\",\"@type\":\"@id\"},\"Hashtag\":\"as:Hashtag\",\"ostatus\":\"http://ostatus.org#\",\"atomUri\":\"ostatus:atomUri\",\"inReplyToAtomUri\":\"ostatus:inReplyToAtomUri\",\"conversation\":\"ostatus:conversation\",\"toot\":\"http://joinmastodon.org/ns#\",\"Emoji\":\"toot:Emoji\",\"focalPoint\":{\"@container\":\"@list\",\"@id\":\"toot:focalPoint\"},\"featured\":{\"@id\":\"toot:featured\",\"@type\":\"@id\"},\"schema\":\"http://schema.org#\",\"PropertyValue\":\"schema:PropertyValue\",\"value\":\"schema:value\"}],\"id\":\"https://mastodon.test.yukimochi.io/users/yukimochi/statuses/101075045564444857/activity\",\"type\":\"Create\",\"actor\":\"https://mastodon.test.yukimochi.io/users/yukimochi\",\"published\":\"2018-11-15T11:07:26Z\",\"to\":[\"https://www.w3.org/ns/activitystreams#Public\"],\"cc\":[\"https://mastodon.test.yukimochi.io/users/yukimochi/followers\"],\"object\":{\"id\":\"https://mastodon.test.yukimochi.io/users/yukimochi/statuses/101075045564444857\",\"type\":\"Note\",\"summary\":null,\"inReplyTo\":null,\"published\":\"2018-11-15T11:07:26Z\",\"url\":\"https://mastodon.test.yukimochi.io/@yukimochi/101075045564444857\",\"attributedTo\":\"https://mastodon.test.yukimochi.io/users/yukimochi\",\"to\":[\"https://www.w3.org/ns/activitystreams#Public\"],\"cc\":[\"https://mastodon.test.yukimochi.io/users/yukimochi/followers\"],\"sensitive\":false,\"atomUri\":\"https://mastodon.test.yukimochi.io/users/yukimochi/statuses/101075045564444857\",\"inReplyToAtomUri\":null,\"conversation\":\"tag:mastodon.test.yukimochi.io,2018-11-15:objectId=68:objectType=Conversation\",\"content\":\"<p>Actvity-Relay</p>\",\"contentMap\":{\"en\":\"<p>Actvity-Relay</p>\"},\"attachment\":[],\"tag\":[]},\"signature\":{\"type\":\"RsaSignature2017\",\"creator\":\"https://mastodon.test.yukimochi.io/users/yukimochi#main-key\",\"created\":\"2018-11-15T11:07:26Z\",\"signatureValue\":\"mMgl2GgVPgb1Kw6a2iDIZc7r0j3ob+Cl9y+QkCxIe6KmnUzb15e60UuhkE5j3rJnoTwRKqOFy1PMkSxlYW6fPG/5DBxW9I4kX+8sw8iH/zpwKKUOnXUJEqfwRrNH2ix33xcs/GkKPdedY6iAPV9vGZ10MSMOdypfYgU9r+UI0sTaaC2iMXH0WPnHQuYAI+Q1JDHIbDX5FH1WlDL6+8fKAicf3spBMxDwPHGPK8W2jmDLWdN2Vz4ffsCtWs5BCuqOKZrtTW0Rdd4HWzo40MnRXvBjv7yNlnnKzokANBqiOLWT7kNfK0+Vtnt6c/bNX64KBro53KR7wL3ZBvPVuv5rdQ==\"}}"
 		var activity activitypub.Activity
@@ -400,8 +405,8 @@ func TestHandleInboxInvalidFollow(t *testing.T) {
 	if err != nil {
 		t.Fatalf("Failed - " + err.Error())
 	}
-	if r.StatusCode != 400 {
-		t.Fatalf("Failed - StatusCode is not 400")
+	if r.StatusCode != 202 {
+		t.Fatalf("Failed - StatusCode is not 202")
 	}
 	res, _ := redClient.Exists("relay:subscription:" + domain.Host).Result()
 	if res != 0 {
@@ -492,6 +497,33 @@ func TestHandleInboxInvalidUnfollow(t *testing.T) {
 	redClient.Del("relay:subscription:" + domain.Host).Result()
 }
 
+func TestHandleInboxUnfollowAsActor(t *testing.T) {
+	activity := mockActivity("UnfollowAsActor")
+	actor := mockActor("Person")
+	domain, _ := url.Parse(activity.Actor)
+	s := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		handleInbox(w, r, mockActivityDecoderProvider(&activity, &actor))
+	}))
+	defer s.Close()
+
+	redClient.HSet("relay:subscription:"+domain.Host, "inbox_url", "https://mastodon.test.yukimochi.io/inbox").Result()
+
+	req, _ := http.NewRequest("POST", s.URL, nil)
+	client := new(http.Client)
+	r, err := client.Do(req)
+	if err != nil {
+		t.Fatalf("Failed - " + err.Error())
+	}
+	if r.StatusCode != 400 {
+		t.Fatalf("Failed - StatusCode is not 400")
+	}
+	res, _ := redClient.Exists("relay:subscription:" + domain.Host).Result()
+	if res != 1 {
+		t.Fatalf("Failed - Block actor unfollow not succeed.")
+	}
+	redClient.Del("relay:subscription:" + domain.Host).Result()
+}
+
 func TestHandleInboxValidCreate(t *testing.T) {
 	activity := mockActivity("Create")
 	actor := mockActor("Person")