tion to message consumer. For example, if a client's message storage space is exhausted, some
 messages may be dropped in accordance with a site-specific message retention policy.

 <p>
 A message is guaranteed to be delivered once and only once by a Jakarta Messaging provider if the delivery mode of the message is
 <code>PERSISTENT</code> and if the destination has a sufficient message retention policy.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>JMS 1.0</dd>
<dt><span class="simpleT