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<title>F6FBB Pages : FBB</title>
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<h1 align="center">ACK messages</h1>
<p>An ACK messages gives the confirmation that a PRIVATE arrived in tis destination back
to the sender.</p>
<h3>How does an ACK message work ?</h3>
<ul class="txt">
<li>An ACK message is requested with the string <br>
/ACK <br>
written by the sender inside his message in 1st column.</li>
<li>When the message arrives in its destination, an ACK message is generated and sent back
to the requester, including the date and eventually other informations.</li>
</ul>
<h3>Protocol</h3>
<ul class="txt">
<li>The SID of the BBS including this feature will have the letter "A"</li>
<li>An ACK message is a short message including only text</li>
<li>An ACK message is generated only on private mail, not on bulletins</li>
<li>The message has a type "A" (private are "P", bulletins are
"B")</li>
<li>Only the first header forwarding line is generated, other BBS will not add their header
forwarding line</li>
<li>If the BBS which is forwarded does not include this feature, the message is changed to
type "P" (Private).</li>
<li>Type "A" message are not seen by users.</li>
<li>When arriving back to its destination, the type of the ACK message is changed to type
"P" (private) to be read by the requester.</li>
</ul>
<p> </p>
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