moving messages on exchangeserver

Have either one of you tried to move a message between a user's Inbox on an
Exchangeserver, to a Public Folder on that same server, using
Imap_mail_move() ????

Could it be done? I am really getting the feeling it can't be done.
Here's the chunk:

<?php
set_time_limit(1800);
$mbox = imap_open("{exchange:143}", "filer", "test");
$thirdbox = imap_open("{exchange:143}/*EAME/Delft", "filer", "test");

echo "<p><h1>Mailboxes</h1>\n";
$folders = imap_listmailbox($mbox, "{exchange:143}", "*");

if ($folders == false) {
echo "Call failed<br />\n";
} else {
while (list ($key, $val) = each($folders)) {
echo $val . "<br />\n";
}
}

echo "<p><h1>Headers in INBOX</h1>\n";flush();
$headers = imap_headers($mbox);

if ($headers == false) {
echo "Call failed<br />\n";
} else {
while (list ($key, $val) = each ($headers)) {
echo $key . " " . $val . "<br />\n";
}
}

$movmsgid=1;
imap_mail_move($mbox,$movmsgid,'Public folders/*EAME/Delft');
$err=imap_errors();
print $err[0];

echo "<p><h1>Headers in Public Folders/*EAME/Delft</h1>\n";flush();
$headers = imap_headers($thirdbox);

if ($headers == false) {
echo "Call failed<br />\n";
} else {
while (list ($key, $val) = each ($headers)) {
echo $val . "<br />\n";
}
}

#imap_expunge($mbox);
imap_close($mbox);

?>

The error I get: There is no replica for that mailbox on this server.

While the first list clearly shows me the Public Folder is in fact there.

Suggestions?