title: How make mail sending on Hetzner VPS (VQ)?
body: <p>I've changed my hosting to Hetzner VPS (VQ12) with Ubuntu. But mail is not sending from php using mail(); 
  I made sendmail intallation:
  apt-get install sendmail
  sendmailconfig</p>
  
  <p>But after this I receiving 504 timeout error trying mail() function.</p>
  
  <p>cat /var/log/mail.err gives me:
   unable to qualify my own domain name (antonsk) -- using short name
  Jan 22 16:00:01 antonsk sm-msp-queue[3513]: My unqualified host name (antonsk) unknown; sleeping for retry</p>
  
  <p>What should I do with this to make it work?!</p>