> 3. Spreading lots of different email addresses around is a bad idea.
The fact that you know you can reject them really doesn't help. As we
speak, my mail server is eating up 8-16KBs of bandwidth right now doing
nothing but rejecting email sent to non-existent addresses. Yesterday
some idiot on Level3's network tried to connect to our mail server
500,000 times. You do *not* want that happening to your mail server.
Increasing the number of throwaway addresses simply
> increases the bandwidth costs of spam.
None of those addresses are being accepted. That bandwidth and
traffic comes from bouncing spam and viruses sent to 40,000
non-existent addresses. We bounce one every two seconds in normal
times, 10-15 a second during peak virus season. To put that in terms
of throw-away addresses, I'd guess that an average user might have 20
throwaways in a year, so call that the traffic for 2000 users (the
first year--of course it doubles every year after that).