diff --git a/mastodon/api.py b/mastodon/api.py
index 0a43e048..f978ae28 100644
--- a/mastodon/api.py
+++ b/mastodon/api.py
@@ -133,6 +133,20 @@ def create_app(domain_name):
     return response
 
 
+def webfinger(site, username) -> dict | None:
+    url = f"https://{site}/.well-known/webfinger?resource=acct:{username}@{site}"
+    try:
+        response = get(url, headers={"User-Agent": USER_AGENT})
+        if response.status_code != 200:
+            logger.error(f"Error webfinger {username}@{site} {response.status_code}")
+            return None
+        j = response.json()
+        return j
+    except Exception:
+        logger.error(f"Error webfinger {username}@{site}")
+        return None
+
+
 # utils below
 def random_string_generator(n):
     s = string.ascii_letters + string.punctuation + string.digits
diff --git a/users/migrations/0015_user_mastodon_last_reachable.py b/users/migrations/0015_user_mastodon_last_reachable.py
new file mode 100644
index 00000000..7bdb1d39
--- /dev/null
+++ b/users/migrations/0015_user_mastodon_last_reachable.py
@@ -0,0 +1,19 @@
+# Generated by Django 4.2.7 on 2023-11-11 05:34
+
+import django.utils.timezone
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("users", "0011_preference_hidden_categories"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="user",
+            name="mastodon_last_reachable",
+            field=models.DateTimeField(default=django.utils.timezone.now),
+        ),
+    ]
diff --git a/users/models/user.py b/users/models/user.py
index e67cc46a..ba9cbe37 100644
--- a/users/models/user.py
+++ b/users/models/user.py
@@ -120,6 +120,7 @@ class User(AbstractUser):
     mastodon_domain_blocks = models.JSONField(default=list)
     mastodon_account = models.JSONField(default=dict)
     mastodon_last_refresh = models.DateTimeField(default=timezone.now)
+    mastodon_last_reachable = models.DateTimeField(default=timezone.now)
     # store the latest read announcement id,
     # every time user read the announcement update this field
     read_announcement_index = models.PositiveIntegerField(default=0)
@@ -362,7 +363,13 @@ def merge_rejected_by(cls):
 
     def refresh_mastodon_data(self):
         """Try refresh account data from mastodon server, return true if refreshed successfully, note it will not save to db"""
+        logger.debug(f"Refreshing Mastodon data for {self}")
         self.mastodon_last_refresh = timezone.now()
+        if not webfinger(self.mastodon_site, self.mastodon_username):
+            logger.error(f"Unable to fetch web finger for {self}")
+            self.save(update_fields=["mastodon_last_refresh"])
+            return False
+        self.mastodon_last_reachable = timezone.now()
         code, mastodon_account = verify_account(self.mastodon_site, self.mastodon_token)
         if code == 401 and self.mastodon_refresh_token:
             self.mastodon_token = refresh_access_token(