On an .ASP plan, when testing a recently setup Autoresponder, it works the first time but the autoresponder doesn't send emails back after that.

For security purposes, the mail server only sends one auto-response email back per recipient. This is to make sure the auto-response feature is not abused by users sending a flood of emails and having the server struggle in sending thousands of auto-response emails to the same email address. Once the auto-response is removed and recreated, the database of recipients is reset. If you have further questions in regards to this, please email support.