On Sun, 11 Jul 2004 12:14:19 -0700, James Couzens wrote
It works fine, perhaps not for the application apparently being
addressed in this conversation, so I was a little off topic. That being
said using wildcard's is an easy way to deter spammers from making up
subdomains on your network that don't exist (I'm unsure if A) this even
happens and if B) there is any value).
I don't think there's much value. Many MTAs these days do a basic sanity
check on domain names to make sure there's a machine there that could
conceivably accept mail. (i.e., an A or MX record.)