Threat Intelligence Center
Sender Support ►
Understanding BlacklistsISP Filtering Reference
Threat Level Guide
Threat Classifications
Spam Traps & HoneypotsRecycled Traps & Moles
Oversight Seeds
Typo & Fake Emails
Black Holes
Dormant Accounts
Parked Resources
Disposable Email Accounts
Blacklist Profiles
URIBL Advisory SitesRBL Advisories
Blacklist Removal
Recent Articles
Spam Trap Hit?Suspended ESP account?
Anti-Spam Blogs
Word-to-the-Wise BlogAl Iverson Blog
Blacklist Profiles\The Kempt.net DNS Black List
The goal of the Kempt.net black list is to catch and react to new hosts used for spamming purposes as quickly as possible.
Blacklist Zone(s)
Blacklist type
RBL: A RBL dnsbl is simply an anti-spam “black list” delivered via DNS which consists of IP addresses which are found in the body of the message. Specifically, there are the domains and IP addresses which spammers use to host their web sites.
Threat level/ delivery impact
Impacted Delivery - The following threats will result in temporal delivery issues, diminishing your campaign's outreach and effectiveness. Prolonged sending of these threats may result in longer lasting temporary blocks leading to eventual permanent blocking of your emails. There is minimal overall brand and sending resource reputational harm from these items
Nomination
Automatic (upon receipt of a spam to a spamtrap mailbox).
Listing lifetime
Notes
Our spam detection system relies on the way in which the messages are sent, rather than on the content of the mail messages, so we do not run as much risk of misidentifying a legitimate message as spam.
Delisting guidance
None. Offending hosts are delisted fairly quickly, with the "penalty" time determined by the number of times this particular host has relayed or originated spam in the past. This way, transient spammers are listed for a short time, and will be delisted once the problem is corrected. Persistent spammers will be listed for a longer time, and will presumably sooner or later show up in many of the larger lists of known open relays or spam sources.
About Impressionwise
Impressionwise is a firm that provides professional real-time email verification, validation, and list cleaning services. Our core belief is that in order to have a successful email campaign, a company must send only a clean, well maintained email list. Our cleansing methodology is focused on the health of your sending network resources. The cleaner the domain and IP the better the delivery. Specifically helping email marketers validate and remove threat based email elements such as spam traps to ensure you are maximizing your lists' potential resulting in a higher level of engagement with your recipients. Our services allow you eliminate hard bounces and thus avoid being banned by your email service provider. Having been around for the past decade, Impressionwise’s longevity and industry experience have allowed us to amass the industry’s largest set of email list cleaning resources with the most flexible service options resulting in the highest level of actionable insight.