diff --git a/src/admin/insights/AdminAppInsights.tsx b/src/admin/insights/AdminAppInsights.tsx
index d6f387eb..122eee33 100644
--- a/src/admin/insights/AdminAppInsights.tsx
+++ b/src/admin/insights/AdminAppInsights.tsx
@@ -45,6 +45,7 @@ export default async function AdminAppInsights() {
   const {
     forkBehind,
     noAiRateLimiting,
+    noConfiguredDomain,
     outdatedPhotos,
   } = getSignificantInsights({
     codeMeta,
@@ -59,6 +60,7 @@ export default async function AdminAppInsights() {
         forkBehind,
         noAi: !isAiTextGenerationEnabled,
         noAiRateLimiting,
+        noConfiguredDomain,
         outdatedPhotos,
         photoMatting: photosCountPortrait > 0 && !MATTE_PHOTOS,
         gridFirst: (
diff --git a/src/admin/insights/AdminAppInsightsClient.tsx b/src/admin/insights/AdminAppInsightsClient.tsx
index b267e36b..ec4ddc14 100644
--- a/src/admin/insights/AdminAppInsightsClient.tsx
+++ b/src/admin/insights/AdminAppInsightsClient.tsx
@@ -103,6 +103,7 @@ export default function AdminAppInsightsClient({
     forkBehind,
     noAi,
     noAiRateLimiting,
+    noConfiguredDomain,
     outdatedPhotos,
     photoMatting,
     gridFirst,
@@ -252,6 +253,26 @@ export default function AdminAppInsightsClient({
                 prevent abuse by enabling rate limiting.
               </>}
             />}
+            {(noConfiguredDomain || debug) && <ScoreCardRow
+              icon={<PiWarningBold
+                size={17}
+                className={clsx(
+                  'translate-x-[0.5px]',
+                  WARNING_TEXT_COLOR,
+                )}
+              />}
+              content={isExpanded => renderHighlightText(
+                'Configure domain',
+                'yellow',
+                !isExpanded,
+              )}
+              expandContent={<>
+                Not explicitly setting a domain may cause certain features
+                to behave unexpectedly. Domains are stored in
+                {' '}
+                <EnvVar variable="NEXT_PUBLIC_SITE_DOMAIN" />.
+              </>}
+            />}
             {(noStaticOptimization || debug) && <ScoreCardRow
               icon={<RiSpeedMiniLine
                 size={19}
diff --git a/src/admin/insights/index.ts b/src/admin/insights/index.ts
index a1459a9b..9b9b6e34 100644
--- a/src/admin/insights/index.ts
+++ b/src/admin/insights/index.ts
@@ -10,19 +10,30 @@ import {
 import { PhotoDateRange } from '@/photo';
 import { getGitHubMeta } from '@/platforms/github';
 
-export type AdminAppInsight =
+type AdminAppInsightCode = 
   'noFork' |
-  'forkBehind' |
+  'forkBehind';
+
+type AdminAppInsightRecommendation =
   'noAi' |
   'noAiRateLimiting' |
-  'outdatedPhotos' |
+  'noConfiguredDomain' |
   'photoMatting' |
   'gridFirst' |
   'noStaticOptimization';
 
-const RECOMMENDATIONS: AdminAppInsight[] = [
+type AdminAppInsightLibrary =
+  'outdatedPhotos';
+
+export type AdminAppInsight =
+  AdminAppInsightCode |
+  AdminAppInsightRecommendation |
+  AdminAppInsightLibrary;
+
+const RECOMMENDATIONS: AdminAppInsightRecommendation[] = [
   'noAi',
   'noAiRateLimiting',
+  'noConfiguredDomain',
   'photoMatting',
   'gridFirst',
   'noStaticOptimization',
@@ -66,11 +77,13 @@ export const getSignificantInsights = ({
   const {
     isAiTextGenerationEnabled,
     hasRedisStorage,
+    hasDomain,
   } = APP_CONFIGURATION;
 
   return {
     forkBehind: Boolean(codeMeta?.isBehind),
     noAiRateLimiting: isAiTextGenerationEnabled && !hasRedisStorage,
+    noConfiguredDomain: !hasDomain,
     outdatedPhotos: Boolean(photosCountOutdated),
   };
 };