This is an old Netware 6 GroupWise 6 SP4 system that has been running well until I changed something a couple of days ago. :(

GWIA receives the email and deposits it in ...<domain>\wpgate\gwia\wpcsin\4 where it sits. The MTA shows the GWIA gateway is closed. I don't know why. I've checked GWIA and MTA settings and they look good. Restarting GWIA and the MTA have no effect. When the MTA restarts, it reports the GWIA gateway is closed.

Any ideas?