http://www.microsoft.com/oem/en/products/servers/Pages/sbs_overview.aspx

http://www.techrepublic.com/blog/10things/10-things-you-should-know-about-microsoft-small-business-server-2011/2339

http://download.microsoft.com/download/4/5/C/45CD1DC6-9204-44DD-999B-24B50A9144B6/SBS%202011_Licensing_FAQ.pdf

http://blog.mpecsinc.ca/2010/12/sbs-2011-setup-guide-v100.html

SBS Console → Getting Started Tasks → Add a Trusted Certificate → I want to buy a certificate

If you want to buy a Wildcard Certificate, change 'remote.yourdomain.com' to '*.yourdomain.com'.

http://technet.microsoft.com/en-us/library/cc527590.aspx

http://support.microsoft.com/kb/2532185

http://blogs.technet.com/b/sbs/archive/2011/03/18/how-to-configure-email-routing-to-sharepoint-in-sbs-2011.aspx