Following our last post on what to do when your emails are blocked here is a list of resources to check your reputation and get ranked as a good sender.

SenderScore.org
Like a credit score, a Sender Score is a measure of your reputation. Scores are calculated from 0 to 100. The higher your score, the better your reputation and the higher your email deliverability rate. Numbers are calculated on a rolling 30-day average and illustrate where your IP address ranks against other IP addresses. This service is provided by Return Path.

Talos
Talos (formerly) Senderbase is a product of Cisco and provides you with the tools to check your reputation by ranking you as Good, Neutral, or Poor. Good means there is little or no threat activity. Neutral means your IP address or domain is within acceptable parameters, but may still be filtered or blocked. Poor means there is a problematic level of threat activity and you are likely to be filtered or blocked.

ReputationAuthority
WatchGuard’s ReputationAuthority helps protect business and government organizations from unwanted email and web traffic that contain spam, malware, spyware, malicious code, and phishing attacks. You can look up your IP address or domain, receive a reputation score from 0-100, and get the percentage of emails that were good versus bad.

BarracudaCentral
Barracuda Networks provides both an IP and domain reputation lookup via their Barracuda Reputation System; a real-time database of IP addresses with “poor” or “good” reputations. We recommend registering your domain with Barracuda. Your IP addresses can be found in your VMTA settings and our network is published here

EmailReg.org
When implementing DMARC you become responsible for much more than before. Essentially the health of your domain and reputation. We recommend you register with EmailReg.org. EmailReg.org creates responsibility for email sent from an IP address. EmailReg.org associates specific domains with a sending IP address. By creating a responsible party and identifying IP addresses, we greatly enhance our ability to fight spam and to eliminate false positives.

The Tribe at Zulu can navigate you through this maze.