Blocked Message Score

The Block Score is based on the rate of “content” driven failures that are observed over the rolling 15 day period. This analysis looks at the error codes returned by the recipient mail server to identify error responses that explain why they chose to not deliver the message.

Since each mailbox provider uses a different set of content filters and establishes their own set of rules, there are a multitude of reasons why messages can be blocked. The top three most common reasons we see an increase in the number of messages being blocked are due to sending messages that contain elements of known spam patterns, sending mail from a blacklisted domain or messages that contain a blacklisted url, or technical issues such as misconfigured DNS records.