It seems that DSN is broken. Atleast with GW 801 on Netware. The GWIA sends the DSN parameters with an illegal email address for the status replies. The email address is composed as firstname.lastname@domain.com. That causes illegal (non-rfc compliant) email adresses when e.g. the last name contains spaces. Groupwise also lists these addresses as valid addresses under Internet Addressing. Groupwise should filter these out. This causes lot of problems. As a workaround I've disabled DSN.

Is this a know bug/problem and will this be fixed in the next HotPatch?