> so, how do you do it? > use the chkuser patch for qmail, so no illegal users get into the queue? > write a wrapper for vpopmail so that it exits 0 even when the user > doesn't exist? > use some hack for maildrop??
I am also having the same problems. I hadn't noticed it until my queue was over 30,000 messages. I haven't had the time to work out a real solution yet. I didn't know if it was better to hack maildrop or hack vdelivermail since I haven't even looked into either one of them yet. What I had found was that one of my domains was receiving thousands of messages per hour for non-existent users and bouncing back. So as a quick fix, I set the default to delete, I shortened the queuelifetime to 3 days, and increased the concurrency settings because they were constantly maxed out. I'd also like to hear what real solutions people have come up with to deal with this.
