diff --git a/CALCKEY.md b/CALCKEY.md
index 4ee5dfc45..990908ca8 100644
--- a/CALCKEY.md
+++ b/CALCKEY.md
@@ -121,6 +121,6 @@
 	- b0fdedb264db87575063abed45e52ad71ce4a6af: fix lints in folder.vue
 	- 6fed87f85d132304eb84b0a59b84dce299a1822f: fix pagination.vue lints
 	- Tosti's security fixes
-	- 384e8c49b738f576ba8843296de6cebf01c1b247: server: allow to like own gallery posts 
-	- 4c5aa9e53887cca5561fcec6ab0754e018f589a5: server: allow to like own pages 
-	- 923c93da1228458dd65be47483c198a1a9191bcf: use await for notes.countBy 
+	- 384e8c49b738f576ba8843296de6cebf01c1b247: server: allow to like own gallery posts
+	- 4c5aa9e53887cca5561fcec6ab0754e018f589a5: server: allow to like own pages
+	- 923c93da1228458dd65be47483c198a1a9191bcf: use await for notes.countBy
diff --git a/packages/backend/src/queue/processors/deliver.ts b/packages/backend/src/queue/processors/deliver.ts
index df070d1de..df8dbb23e 100644
--- a/packages/backend/src/queue/processors/deliver.ts
+++ b/packages/backend/src/queue/processors/deliver.ts
@@ -1,50 +1,25 @@
 import { URL } from 'node:url';
-import Bull from 'bull';
 import request from '@/remote/activitypub/request.js';
 import { registerOrFetchInstanceDoc } from '@/services/register-or-fetch-instance-doc.js';
 import Logger from '@/services/logger.js';
 import { Instances } from '@/models/index.js';
 import { apRequestChart, federationChart, instanceChart } from '@/services/chart/index.js';
 import { fetchInstanceMetadata } from '@/services/fetch-instance-metadata.js';
-import { fetchMeta } from '@/misc/fetch-meta.js';
 import { toPuny } from '@/misc/convert-host.js';
-import { Cache } from '@/misc/cache.js';
-import { Instance } from '@/models/entities/instance.js';
-import { DeliverJobData } from '../types.js';
 import { StatusError } from '@/misc/fetch.js';
+import { shouldSkipInstance } from '@/misc/skipped-instances.js';
+import type { DeliverJobData } from '@/queue/types.js';
+import type Bull from 'bull';
 
 const logger = new Logger('deliver');
 
 let latest: string | null = null;
 
-const suspendedHostsCache = new Cache<Instance[]>(1000 * 60 * 60);
-
 export default async (job: Bull.Job<DeliverJobData>) => {
 	const { host } = new URL(job.data.to);
+	const puny = toPuny(host);
 
-	// ブロックしてたら中断
-	const meta = await fetchMeta();
-	if (meta.blockedHosts.includes(toPuny(host))) {
-		return 'skip (blocked)';
-	}
-
-	if (meta.privateMode && !meta.allowedHosts.includes(toPuny(host))) {
-		return 'skip (not allowed)';
-	}
-
-	// isSuspendedなら中断
-	let suspendedHosts = suspendedHostsCache.get(null);
-	if (suspendedHosts == null) {
-		suspendedHosts = await Instances.find({
-			where: {
-				isSuspended: true,
-			},
-		});
-		suspendedHostsCache.set(null, suspendedHosts);
-	}
-	if (suspendedHosts.map(x => x.host).includes(toPuny(host))) {
-		return 'skip (suspended)';
-	}
+	if (await shouldSkipInstance(puny)) return 'skip';
 
 	try {
 		if (latest !== (latest = JSON.stringify(job.data.content, null, 2))) {
diff --git a/packages/backend/src/remote/activitypub/deliver-manager.ts b/packages/backend/src/remote/activitypub/deliver-manager.ts
index 4c1999e4c..1bcdcdfdb 100644
--- a/packages/backend/src/remote/activitypub/deliver-manager.ts
+++ b/packages/backend/src/remote/activitypub/deliver-manager.ts
@@ -1,7 +1,8 @@
-import { Users, Followings } from '@/models/index.js';
-import { ILocalUser, IRemoteUser, User } from '@/models/entities/user.js';
-import { deliver } from '@/queue/index.js';
 import { IsNull, Not } from 'typeorm';
+import { Users, Followings } from '@/models/index.js';
+import type { ILocalUser, IRemoteUser, User } from '@/models/entities/user.js';
+import { deliver } from '@/queue/index.js';
+import { skippedInstances } from '@/misc/skipped-instances.js';
 
 //#region types
 interface IRecipe {
@@ -117,10 +118,21 @@ export default class DeliverManager {
 			// check that they actually have an inbox
 			&& recipe.to.inbox != null,
 		)
-		.forEach(recipe => inboxes.add(recipe.to.inbox!));
+			.forEach(recipe => inboxes.add(recipe.to.inbox!));
+
+		const instancesToSkip = await skippedInstances(
+			// get (unique) list of hosts
+			Array.from(new Set(
+				Array.from(inboxes)
+					.map(inbox => new URL(inbox).host),
+			)),
+		);
 
 		// deliver
 		for (const inbox of inboxes) {
+			// skip instances as indicated
+			if (instancesToSkip.includes(new URL(inbox).host)) continue;
+
 			deliver(this.actor, this.activity, inbox);
 		}
 	}