Mail Routing and No Option?

Mail routing mimics the real world. As long as there is a proper address, the mail, in theory, arrives at its destination.
Like the real world, bad addressing either gets returned to sender or ends up in the Dead Letter Office or in Domino, the mail.box.
When the mail.box starts getting full of bad emails, all mail stops.
This is NOT like the real world.
And so it happens under R7.0.1 FP1(some say all of R7). As soon as we start getting incorrect mail stuck in the mail.box it crashes the server.
How very disturbing.
Now what?
From forum discussions going to 7.0.2 will not fix this. So I am left to go backwards or face a failing server every day?
What about my SLAs?