http://msmvps.com/blogs/bradley/archive/2008/09/18/the-official-sbs-blog-how-to-configure-trusted-smtp-relay-in-exchange-on-sbs-2008.aspxThe Official SBS Blog : How to Configure Trusted SMTP Relay in Exchange on SBS 2008: http://blogs.technet.com/sbs/archive/2008/09/18/how-to-configure-trusted-smtp-relay-in-exchange-on-sbs-2008.aspxenCommunityServer 2008.5 SP2 (Build: 40407.4157)