A little warning in case you find some of these cryptic X.400 non-
delivery messages in your mailbox and don't understand what's going
on:
 
The german research network has dropped support of the old style dbp.de
addresses for DFN X.400 sites. At the same time the responsibility for
dbp.de has been taken by the german PTT. In practise this means that
mail to dbp.de will bounce. If this happens to you, you may to change
the dbp.de suffix into d400.de. This should help in most cases. This
is particularly important to list owners who want to continue to
reach german X.400 subscribers from their lists.
 
rr