How do I block outbound mail when there is no address in the "from field" in exchange 2007 RRS feed

  • Question

  • I have a client that has multiple emails going out to *@yahoo.com but they do not have any info in the from field
    These are outbound emails that I need to stop
    How can I filter these out?
    Friday, December 18, 2009 7:25 PM