Out of Office not working for 2 users out of 40 ?

Hi,

I have two users in my organisation where out of office is not working. I have rebuilt both machines thinking it is something wrong with the machines. No joy.

I've logged the same users onto other working machines, works fine.

Office 2010 or 2007 installed on either of these two machines out of office will not work...

I have done a Test Email Autoconfiguration from Outlook toolbar and here is the xml below.

<?xml version="1.0" encoding="utf-8"?>
<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006">
  <Response xmlns="http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a">
    <User>
      <DisplayName>Dawn Helm</DisplayName>
      <LegacyDN>/o=First Organization/ou=First Administrative Group/cn=Recipients/cn=dawn</LegacyDN>
      <AutoDiscoverSMTPAddress>dawn@fpci.co.uk</AutoDiscoverSMTPAddress>
      <DeploymentId>08702d52-d8b6-4e4a-ae66-78241648f7d1</DeploymentId>
    </User>
    <Account>
      <AccountType>email</AccountType>
      <Action>settings</Action>
      <Protocol>
        <Type>EXCH</Type>
        <Server>FPCISVR01.fpci.local</Server>
        <ServerDN>/o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=FPCISVR01</ServerDN>
        <ServerVersion>738180DA</ServerVersion>
        <MdbDN>/o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=FPCISVR01/cn=Microsoft Private MDB</MdbDN>
        <PublicFolderServer>FPCISVR01.fpci.local</PublicFolderServer>
        <AD>FPCISVR02.fpci.local</AD>
        <ASUrl>https://fpcisvr01.fpci.local/EWS/Exchange.asmx</ASUrl>
        <EwsUrl>https://fpcisvr01.fpci.local/EWS/Exchange.asmx</EwsUrl>
        <EcpUrl>https://fpcisvr01.fpci.local/ecp/</EcpUrl>
        <EcpUrl-um>?p=customize/voicemail.aspx&amp;exsvurl=1</EcpUrl-um>
        <EcpUrl-aggr>?p=personalsettings/EmailSubscriptions.slab&amp;exsvurl=1</EcpUrl-aggr>
        <EcpUrl-mt>PersonalSettings/DeliveryReport.aspx?exsvurl=1&amp;IsOWA=&lt;IsOWA&gt;&amp;MsgID=&lt;MsgID&gt;&amp;Mbx=&lt;Mbx&gt;</EcpUrl-mt>
        <EcpUrl-ret>?p=organize/retentionpolicytags.slab&amp;exsvurl=1</EcpUrl-ret>
        <EcpUrl-sms>?p=sms/textmessaging.slab&amp;exsvurl=1</EcpUrl-sms>
        <OOFUrl>https://fpcisvr01.fpci.local/EWS/Exchange.asmx</OOFUrl>
        <UMUrl>https://fpcisvr01.fpci.local/EWS/UM2007Legacy.asmx</UMUrl>
        <OABUrl>https://fpcisvr01.fpci.local/OAB/4a82b990-0949-48ff-9359-d25797b6c649/</OABUrl>
      </Protocol>
      <Protocol>
        <Type>WEB</Type>
        <Internal>
          <OWAUrl AuthenticationMethod="Basic, Fba">https://fpcisvr01.fpci.local/owa/</OWAUrl>
          <Protocol>
            <Type>EXCH</Type>
            <ASUrl>https://fpcisvr01.fpci.local/EWS/Exchange.asmx</ASUrl>
          </Protocol>
        </Internal>
        <External>
          <OWAUrl AuthenticationMethod="Fba">https://mail.fpci.co.uk/owa/</OWAUrl>
          <Protocol>
            <Type>EXPR</Type>
            <ASUrl>https://mail.fpci.co.uk/ews/exchange.asmx</ASUrl>
          </Protocol>
        </External>
      </Protocol>
      <AlternativeMailbox>
        <Type>Delegate</Type>
        <DisplayName>Mick Turnbull</DisplayName>
        <LegacyDN>/o=First Organization/ou=First Administrative Group/cn=Recipients/cn=Mick.Turnbull</LegacyDN>
        <Server>FPCISVR01.fpci.local</Server>
      </AlternativeMailbox>
    </Account>
  </Response>
</Autodiscover>

I'm at a loss as to what is causing this, any help would be appreciated.

Thanks,

Rob