An oldie but I see it coming up in the newsgroups...my guess is that some sysadmins forgot to
fix the problem and the users (specifically home users) trying to access their mailboxes are
surprised and convinced that something is wrong with their own system(which to some extent is
true...):
http://support.microsoft.com/kb/911829
The resource kit for Windows Vista is out now as published on the
Vista team's blog. 25 lucky/quick readers received a free copy:
http://windowsvistablog.com/blogs/windowsvista/archive/2007/04/03/announcing-the-windows-vista-resource-kit.aspx
They seem relatively minor yet they are there:
http://support.microsoft.com/kb/935448/
There are a couple I really like:
IP over Avian (check out the diagrams)
http://tools.ietf.org/html/rfc2549
Electricity over IP
http://tools.ietf.org/html/rfc3251