title: Exchange 2010 force email send over external smtp server for one specific mail adress
body: <p>I have a acepted domain in my exchange server, lets call it @domain.com. I receive my mails by getting them from an external mailserver with my pop3 connector.</p>
  
  <p>I have one user (lets call him user1@domain.com) which is not using his exchange account. He`s working with a local profil and receives his mails with by calling them directly with pop3 mail. </p>
  
  <p>The problem is: If I want to send him a mail from a user that is using the Exchange Server the exchange server tries to deliever the mail internally but user1@domain.com has no account in the exchange server.</p>
  
  <p>How can I force the exchange server to send mails to user1@domain.com over my external smtp server?</p>
  
  <p>Thanks in advance</p>