AutodiscoverMicrosoft.php doesn't check for a namespace.

the xml request looks like this

[04-Aug-2015 10:56:48 +0200]: [DEBUG] Request [microsoft]:

<?xml version="1.0" encoding="utf-8"?><Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/outlook/requestschema/2006"><Request><EMailAddress>test.test@test.net</EMailAddress><AcceptableResponseSchema>http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a</AcceptableResponseSchema></Request></Autodiscover>

the email field is always empty after parsing the request.

FIX
''''''''
Replace Namestring in Request

simple php file with xmlParser

<?php
$strXml= <<<XML
<?xml version="1.0" encoding="utf-8"?><Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/outlook/requestschema/2006"><Request><EMailAddress>test.test@test.net</EMailAddress><AcceptableResponseSchema>http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a</AcceptableResponseSchema></Request></Autodiscover>
XML;

$xmlDoc=new \SimpleXMLElement($strXml);

foreach($xmlDoc->getDocNamespaces() as $strPrefix => $strNamespace) {

if(strlen($strPrefix)==0) {
    $strPrefix="a"; //Assign an arbitrary namespace prefix.
}
$xmlDoc->registerXPathNamespace($strPrefix,$strNamespace);

}

print($xmlDoc->xpath("a:EMailAddress")[0]); Use the arbitrary namespace prefix in the query.
?>