Something unusual came up today when one of my colleagues complained about mails from GMail not reaching him. The bounced message said “Mail from 66.249.92.170 not accepted - check www.spamcop.net/bl.shtml”. I just discovered that a block of google ips have been listed as spammers in the spamcop.net’s blacklist. Here are screenshots of aquery on spamcop database as well as the reverse dns query on dnsstuff.com.
I am Prasad Sunkari,
co-founder of