I installed the script and I'm testing it on my server. For my other websites I use Google Apps to send and receive eMails, so I have to use it for Q2A too because I disabled the mail server. At the moment the script can send email notifications but the Feedback form doesn't work. On the front end I can see the message explaining that the message is sent with success, but no emails in my inbox of Google Apps.
Please, some tips? Thank you very much for your help.
Note: I readed a couple of answers in this board but it seems the qa-external doesn't work in my case (the settings are correct for Google Apps).