We regularly have to ban blocks of spam IPs, China has a lot of botnets and so a lot of IP ranges get caught up in the bans, it's possible your IP is in one of them.
We regularly have to ban blocks of spam IPs, China has a lot of botnets and so a lot of IP ranges get caught up in the bans, it's possible your IP is in one of them.
Unfortunately, a lot of brute force attempts (people banging their heads against our various services like email and FTP) lead to us having to block some pretty big ranges of IPs assigned to China