I wonder how many SBS 2008 boxes do not have properly funcitoning postmaster@ and abuse@ email addresses. Why? Because by default, emails to those accounts from external addresses are bounced. The short story is that the postmaster@ and abuse@ email addresses are assigned to the "Postmaster and Abuse Reporting" distribution group. By default, the only member of that distribution group is the "Windows SBS Administrators" group which by default requires that all senders must be authenticated! Doh!
Much thanks to Mariette Knapp over at SmallBizServer.net for her bite-sized article concerning the issue and how to fix it:http://www.smallbizserver.net/Forums/tabid/53/forumid/104/postid/110738/view/topic/Default.aspx
Understanding Cisco UCS Pools
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