title: strange user identification in ejabberd jabber
body: <p>I really did try to google this one, but apparently I don't know the right question...</p>
  
  <p>I have my own jabber server running on ejabberd. It is corporate server where I manage contacts, so I'm sure everyone have full name set in their vCards and other fields are empty.</p>
  
  <p>What's bothering me is when user texts someone in his roster, his nick is displayed in this hideous way:</p>
  
  <blockquote>
    <p>martin.lukes@myserver.cz/36694788191361948416825289: test message</p>
  </blockquote>
  
  <p>Although when someone text back, his name is displayed as full name (as set in his vCard).</p>
  
  <p>Described behavior is in Pidgin, I also tried Gajim where I learned that the numbers might mean some "location" ("Zdroj" in Czech). In conversation history Gajim uses full name from vCard, but the heading of the conversation window is still:</p>
  
  <blockquote>
    <p>martin.lukes/36694788191361948416825289</p>
  </blockquote>
  
  <p>This led me to thinking that it will be something in ejabberd settings, but I can't find out what.</p>