A realtime blacklist refers to a list that is updated on a regular basis and the changes are propagated immediately -- in real time. Almost all blacklists currently in operation may be considered realtime blacklists in this sense, although some lists are updated on a set schedule such as daily.

RBL Checks

Habeas has three categories for the real time blacklists it tracks in its Reputation Monitor. The high priority lists have well-defined, published listing and removal policies to which the list maintainers adhere consistently. In addition, the high priority lists have a significant impact on deliverability. Listings on the high priority lists tend to be more accurate and have fewer false positives. Medium priority lists still have somewhat aggressive listing policies, but they also have well-defined policies for removing an entry from the list. These medium-priority lists may have some impact on deliverability. The lowest priority lists have aggressive listing policies which may cause false positives             

Benefits of Habeas Monitoring of Real Time Blacklists (RBL)

• Reduce message handling costs by dropping more spam at the edge of your network
• Avoid "false positives" by identifying legitimate email that may bypass content filters
• Utilize email sender characteristics to implement your message handling policies more efficiently
• Tighten content filters without increasing the risk of dropping legitimate email or routing it to the bulk folder
• Reduce escalating costs of email growth by more accurately throttling email traffic and reducing the load on mail servers and message security applications
• Maintain customer satisfaction by ensuring customers receive the mail they want