diff --git a/packages/server/src/routes/dm.ts b/packages/server/src/routes/dm.ts
index ba63d7b8..8e3098c4 100644
--- a/packages/server/src/routes/dm.ts
+++ b/packages/server/src/routes/dm.ts
@@ -21,7 +21,7 @@ import {
 import { sanitizeUser } from '../utils/sanitize.js';
 import { deleteUploadFile, deleteAttachmentFiles } from '../utils/fileCleanup.js';
 import { fetchDmEmbedsForMessages, resolveEmbeds, reResolveEmbeds, embedRowToEmbed } from '../utils/embedResolver.js';
-import { appendMutationLog, queueOutboxEvent, buildRelayPayload, getDmParticipants } from '../utils/federationOutbox.js';
+import { appendMutationLog, queueOutboxEvent, queueDmRelay } from '../utils/federationOutbox.js';
 
 /**
  * Batch-fetch reactions for a set of DM message IDs.
@@ -971,13 +971,8 @@ export async function dmRoutes(app: FastifyInstance): Promise<void> {
     // Broadcast to all DM members (including those who closed the channel)
     broadcastDmMessage(id, message);
 
-    // Federation: log mutation and queue for relay
-    appendMutationLog(messageId, id, 'create');
-    const participants = getDmParticipants(id);
-    queueOutboxEvent(messageId, id, 'create', JSON.stringify({
-      message: { ...buildRelayPayload(message, message.user), attachments: [] },
-      participants,
-    }));
+    // Federation: queue for relay
+    queueDmRelay(message, id, 'create');
 
     // Resolve embeds asynchronously after responding
     setImmediate(() => {
@@ -1040,12 +1035,8 @@ export async function dmRoutes(app: FastifyInstance): Promise<void> {
       });
     }
 
-    // Federation: log mutation and queue for relay
-    appendMutationLog(id, msg.dmChannelId, 'update');
-    queueOutboxEvent(id, msg.dmChannelId, 'update', JSON.stringify({
-      message: buildRelayPayload(updated, updated.user),
-      participants: getDmParticipants(msg.dmChannelId),
-    }));
+    // Federation: queue for relay
+    queueDmRelay(updated, msg.dmChannelId, 'update');
 
     // Resolve new embeds asynchronously (old ones already deleted above)
     setImmediate(() => {