Hello,We are having a strange problem whilst requesting delivery recipets.Basically whenever a message is sent with 1 or more external recipients and one or more internal reciptients, we never recieve a delivery reciept from the external recipients but internally we do. If you send one direct the to the external recipient with DR ticked we get one.We are running the latest updates for Exchange 2007 as of 3 weeks ago and Outlook 2003 as the client although OWA does the same thing so I have ruled out the client being the problem.I am not sure if been introduced with the latest updates we installed or if its just not been seen before.Thanks