====== Exim4 - Determine how exim will route a given address ======

Test how exim will route a given address.

===== Local Domain =====

<code bash>
exim -bt alias@localdomain.com
</code>

returns:

<code>
user@thishost.com
    <-- alias@localdomain.com
  router = localuser, transport = local_delivery
</code>


===== Local Host =====

<code bash>
exim -bt user@thishost.com
</code>

returns:

<code>
user@thishost.com
  router = localuser, transport = local_delivery
</code>


===== A remote host =====

<code bash>
exim -bt user@remotehost.com
</code>

returns:

<code>
  router = lookuphost, transport = remote_smtp
  host mail.remotehost.com [1.2.3.4] MX=0
</code>