Short Description: Determines if the router will expand groups and deliver mail to members of those groups.
Specifies whether the router should allow or deny mail addressed to a group.
0 - Allow the Router to expand groups and forward a message to the group members.
1 - Router will not expand any groups. It will return the message as a failure report to the sender - rejected for policy reasons.
RouterDisableMailToGroups=0 / 1
There is no kown UI setting for this notes.ini variable. But you can specify this setting in the notes.ini settings tab of the configuration settings document.
Lotus Domino Administrator 6 Help