diff --git a/default.nix b/default.nix
index 60dbceb..e0dae37 100644
--- a/default.nix
+++ b/default.nix
@@ -469,7 +469,6 @@ in
       type = let
         loginAccount = mkOptionType {
           name = "Login Account";
-          check = (account: builtins.elem account (builtins.attrNames cfg.loginAccounts));
         };
       in with types; attrsOf (either loginAccount (nonEmptyListOf loginAccount));
       example = {
diff --git a/mail-server/assertions.nix b/mail-server/assertions.nix
index 0e5b15b..951eed2 100644
--- a/mail-server/assertions.nix
+++ b/mail-server/assertions.nix
@@ -5,10 +5,6 @@
       assertion = config.mailserver.loginAccounts == {};
       message = "When the LDAP support is enable (mailserver.ldap.enable = true), it is not possible to define mailserver.loginAccounts";
     }
-    {
-      assertion = config.mailserver.extraVirtualAliases == {};
-      message = "When the LDAP support is enable (mailserver.ldap.enable = true), it is not possible to define mailserver.extraVirtualAliases";
-    }
     {
       assertion = config.mailserver.forwards == {};
       message = "When the LDAP support is enable (mailserver.ldap.enable = true), it is not possible to define mailserver.forwards";