diff --git a/lib/domain.php b/lib/domain.php
index 94d4c20..0e33f93 100644
--- a/lib/domain.php
+++ b/lib/domain.php
@@ -27,10 +27,15 @@ function domain_add($name, $IP, $with_mxs, $gmail=false) {
     return array($exec_cmd, $exec_return, $exec_output);
 }
 
-// Check if the name is present in vhosts already, returns 1 if no
 function check_occurence_name($name) {
-  $check_occurence_cmd = 'web-add.sh check-occurence ' . $name;
-  sudoexec($check_occurence_cmd, $check_occurence_output, $check_occurence_return);
 
-  return $check_occurence_return;
+  $exploded_names = explode(',', $name);
+
+  foreach ($exploded_names as $current_name) {
+    $check_occurence_cmd = 'web-add.sh check-occurence ' . $current_name;
+    sudoexec($check_occurence_cmd, $check_occurence_output, $check_occurence_return);
+    if ($check_occurence_return == 0) return true;
+  }
+
+  return false;
 }