check reserved addresses

zimbraAddressAvailable.php

@@ -51,12 +51,21 @@ $hostingIDsObj = Capsule::table('tblhosting')
 foreach ($hostingIDsObj as $hostingID) {
 	array_push($hostingIDs, $hostingID->id);
 }
+$customfieldIDs = array();
+$customfieldIDsObj = Capsule::table('tblcustomfields')
+	->select('id')
+	->where('relid', $zmAuthPIDs)
+	->where('fieldname', 'LIKE', 'username%')
+	->orWhere('fieldname', 'LIKE', 'maildomain%')
+	->get()
+	->toArray();
+
 logModuleCall(
 	'zimbrasingle',
 	__FUNCTION__,
 	$zmAuthPIDs,
 	'debug',
-	$hostingIDs
+	$customfieldIDsObj
 );