MS exchange 2003 5.2.1 NDR
I am new to both exchange and active directory. I have recently started my first full time job after uni. The problem I have got is that I have one user who cannot receive emails when they are sent from a distribution list but can when they are send to her directly. The sender keeps getting a 5.2.1 Non Delivery Rerport. The list was not created in exchange but from within outlook web access. I have tried re-adding the user to the list but it did not solve the problem.
I cannot see where the problem lies as I have compared the recipients account with other accounts and they look identical. After spending hours on google looking for a solution but to no avail.
We are running exchange 2003 and Server 2003
Any help is appreciated.