title: FORBIDDEN (status code: 403) Can't send messages to this user
body: <p>I want to make a command that will send a DM to the entire server, but I am getting the following error:</p>
  
  <pre><code>Forbidden: FORBIDDEN (status code: 403) Can't send messages to this user
  </code></pre>
  
  <p>What might be causing this?</p>
  
  <p>Here is my current code:</p>
  
  <pre><code>@bot.command(pass_context=True)
  async def massdm(ctx, words*):
      output = " "
      for word in words:
          output += word
          output += "" 
      server = ctx.message.server
      for member in server.members:
          await bot.send_message(member, output)
  </code></pre>