Here’s how many spam attempts we blocked here at fp last week. I don’t expect to publish these regularly, but I find the numbers interesting.

Total connection attempts rejected: 1555
Unknown addressees and number of attempts (note that most of the spam we block is, sadly, bound for valid addresses):
00425 1
AA13534 1
aa13534 1
accounting 1
accounts 1
admin 1
administrator 1
advertising 1
billing 1
contact 1
guest 1
help 1
home 1
info 1
johnsmithsvt 5
mail 1
majordomo 1
root 1
sales 2
service 1
support 1
test 1
uucp 1
webmaster 1

Blacklist effectiveness (attempts blocked by each RBL):
dnsbl.jammconsulting.com 55
bl.spamcop.net 2
korea.services.net 2
dnsbl.sorbs.net 5
sbl-xbl.spamhaus.org 1329
combined.njabl.org 20
china.blackholes.us 8