using 4.6.8 on Drupal 7. FirstData is our payment processor.
This week we received a transaction confirmation from FirstData from one of our long time members. FirstData calls this a "gateway receipt" and is generated directly from them with no involvement with CiviCRM, for every transaction approved. We have his money.
But there's no record of the contribution in CiviCRM itself. I've looked through the database directly (phpmyadmin), looking for transactions of the same dollar amount, or for the same contact, or even orphaned line items with no transaction. Nothing.
Has anyone seen this before or have ideas about how it can happen? Possibly a timeout for transaction response from FirstData?