diff --git a/locales/en.json b/locales/en.json
index 05194c7f0..d9f42dede 100644
--- a/locales/en.json
+++ b/locales/en.json
@@ -91,6 +91,7 @@
     "ask_new_path": "New path",
     "ask_password": "Password",
     "ask_dyndns_recovery_password_explain": "Please pick a recovery password for your DynDNS domain, in case you need to reset it later.",
+    "ask_dyndns_recovery_password_explain_unavailable": "This DynDNS domain is not available, please enter the recovery password if this your domain.",
     "ask_dyndns_recovery_password": "DynDNS recovery password",
     "ask_dyndns_recovery_password_explain_during_unsubscribe": "Please enter the recovery password for this DynDNS domain.",
     "ask_user_domain": "Domain to use for the user's email address and XMPP account",
@@ -411,6 +412,7 @@
     "dyndns_unsubscribed": "DynDNS domain unsubscribed",
     "dyndns_unsubscribe_denied": "Failed to unsubscribe domain: invalid credentials",
     "dyndns_unsubscribe_already_unsubscribed": "Domain is already unsubscribed",
+    "dyndns_unsubscribe_too_many_requests": "YunoHost's free domain service received too many requests from you, wait 1 hour or so before trying again.",
     "dyndns_set_recovery_password_denied": "Failed to set recovery password: invalid key",
     "dyndns_set_recovery_password_unknown_domain": "Failed to set recovery password: domain not registered",
     "dyndns_set_recovery_password_invalid_password": "Failed to set recovery password: password is not strong enough",
diff --git a/src/dyndns.py b/src/dyndns.py
index c634f169d..8efa5e6df 100644
--- a/src/dyndns.py
+++ b/src/dyndns.py
@@ -273,9 +273,11 @@ def dyndns_unsubscribe(operation_logger, domain, recovery_password=None):
         # in /etc/yunohost/dyndns
         regen_conf(["yunohost"])
     elif r.status_code == 403:
-        raise YunohostError("dyndns_unsubscribe_denied")
+        raise YunohostValidationError("dyndns_unsubscribe_denied")
     elif r.status_code == 409:
-        raise YunohostError("dyndns_unsubscribe_already_unsubscribed")
+        raise YunohostValidationError("dyndns_unsubscribe_already_unsubscribed")
+    elif r.status_code == 429:
+        raise YunohostValidationError("dyndns_unsubscribe_too_many_requests")
     else:
         raise YunohostError(
             "dyndns_unsubscribe_failed",