diff --git a/src/ldap.js b/src/ldap.js
index a68fd330a..cc0891a72 100644
--- a/src/ldap.js
+++ b/src/ldap.js
@@ -531,6 +531,7 @@ function start(callback) {
     gServer.search('ou=mailaliases,dc=cloudron', mailAliasSearch);
     gServer.search('ou=mailinglists,dc=cloudron', mailingListSearch);
 
+    gServer.bind('ou=mailboxes,dc=cloudron', authenticateMailbox);
     gServer.bind('ou=recvmail,dc=cloudron', authenticateMailbox);
     gServer.bind('ou=sendmail,dc=cloudron', authenticateMailbox);