Hi,
I am setting up an SBS 2011 Standard Server which is running Exchange 2010.
On our old SBS 2003 Server we were able to restrict users sending out external emails using their default email addresses, by going into 'Exchange System Manager' - Administrative Groups - First Administrative Group - Routing Groups - First Routing group - Connectors - SMTP Connector Properties - Delivery Restrictions tab - 'Reject Messages From' and then add the Security Group.
I cannot see a similar set up in Exchange 2010. Any assistance will be greatly appreciated.
Thanks,
Mark