title: "authentication methods aren't supported by server" on Android devices
body: <p>I have this error "authentication methods aren't supported by server" when i try to configure SMTP in an android device. In ios it works perfectly using MD5 Challenge. 
  I tried to enable CRAM-MD5, DIGEST and LOGIN but it still gives me that error. </p>
  
  <p>I tested every port available. I´m using Plesk 12 with Postfix and Dovecot.</p>