Thanks for that, you really are thinking 'out of the box'!! :-)
I have implemented the changes and will update you when I know if it has
worked or not.
> You could create a standard mailbox and make that a member of both DLs and
> make the CR an alternate recipient of that mailbox. Hide the CR and do not
> select the checkbox to deliver mail to both the mailbox and the alternate
> > Exchange Server 5.5
> > I have a user, configured in Exchange as a custom recipient who is a
> > of two distribution lists.
> > There is a third distribution list which has the first two DL's as its
> > members.
> > The external recipient gets two copies of all emails sent to the third
> > Does any one know how to stop this occurring, without significantly
> > restructuring the DL membership?
> > many thanks for your help
> > Andy C