Hello,
signal-event email-update didn't help, it have to do something with /var/qmail/bin/qmail-newu. It was executed while processing user and pseudonyms.
It should be executed if user or pseudonyms changed in goodrcptto. Maybe some support of the core developers is needed. But I don't give up, I'll find a way to fix this problem and start running a customized SME7 productivity system, it will only take time to understand...
Best regards,
Daniel