On Thursday, April 1, 2004 at 8:29:02 AM you wrote (at least in part):
[blackholing a sender] > I wished not to give the sender any clue as why his mail is disappearing -->> blackholed.
Write your own qmail-queue "replacement" that filters for sender and drops mails from "the notorious". All other mail is than passed to qmail-queue as usual.
This way you don't have to fiddle with qmail sources, you only have to have a QMAILQUEUE-patched qmail.
If this sender is worth the work ... additionally other might benefit from your work, maybe there are other people that like to really blackhole some senders instead of simply rejecting their messages. --
This gives me a clue that perhaps we should be able to do it using qmail-scanner-queue.pl code. Let me try it out. If anyone else too can give some pointer on this angle do let us know.