Exchange 2003 server 2003
emails solo go out fine. but when we email a large amount of clients via a distribution list we are getting bouncebacks. 4.4.7 and they are from different domains. people which we have no problems emailing solo. seems like the root of the problem is that I have a smarthost setup via smtp virtual server.
I'd like to keep the smarthost & still be able to use the distribution lists that users create. is this possible? could i nest them or divide them somehow & that would allow them out through the smarthost? thanks