I have a web application developed in PHP that connects to GMail using PHP IMAP extension, this extension is enabled and working correctly. When I try to connect to GMail using IMAP in my application, on my local server it works correctly (I live in Brazil), but when I put the application in production server, located in USA the GMail servers blocks my connection attempt. Other e-mail providers such as Yahoo or Hotmail (Outlook) works fine, this error only occurs with GMail accounts. When I perform local tests, all is fine, when I test it in my production server, I cannot connect and I receive GMail messages talking about the blocked login attempt. I don't know how I solve this, I thought to use a proxy server but this can left the application very slow.
Anyone had the same problem?
Have you visited this URL yet? If not, go there and follow the instructions then try to sign in again with your application on the production server.