http://msmvps.com/blogs/bernard/archive/2008/04/23/iis-kbs-march-2008.aspx948801 If an SMTP connector set the Outbound Security option to "Integrated Windows Authentication," the SMTP connector does not work in the IIS Metabase when you restore an Exchange Server 2003 server by using a Disaster Recovery mode 949455enCommunityServer 2008.5 SP2 (Build: 40407.4157)