I have been looking around everwhere to find a simple way to add the domain of a client company to the safelist of our company email addresses. (We use Exchange 2007 with SBS 2008 with the latest patches)
I know about 'Safelist Aggregation' as described at: http://www.petri.co.il/reduce-spam-exchange-server-2007-safe-list-aggregation-safe-senders.htm
(I would prefer not to use this method as it could aggregate compromise user level safelists)
I also have tried the 'Set-ContentfilterConfig' method as described at: http://technet.microsoft.com/en-us/library/aa995952(EXCHG.80).aspx
(I have not been able to get it to work for outright domains e.g. @domain.com)
I really hope that there is a simple method that works for what I want to achieve without the use of 3rd party programs.
Please enlighten me if this is possible.