We tested a few recurring donations and while our payment gateway, Authorize.net, shows that the transactions were completed, the user does not receive a receipt. Furthermore, their contribution is marked in their contact record as pending/incomplete. Also, the transaction details are not reported in the CiviCRM. It reports "no payments found".
We are on CiviCRM 4.7.15. Is there something I need to set up? This is the first time we've attempted to use recurring contribution feature.
I've already gone through the steps in this post.
I tailed the ConfigAndLog for errors during a transaction and nothing was reported.