If you’re an ISP or Mail Administrator, between a rock and a hard place is a comparatively comfortable place to be. On one hand, spam clogs your network and irritates your customers. On the other hand, legitimate commercial senders don’t want their emails blocked. Pleasing even some of the people any of the time can seem like an impossible task.
Like all shady characters, bad emailers tend to be repeat offenders. Get the information you need to make smarter filtering decisions. Enter a domain, IP address or CIDR range, to find out what other ISP or Mail Administrators think of the senders who are mailing to your network.