Impressionwise Email Verification and Spam Trap Removal

Threat Intelligence Center


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.

http://www.kempt.net/dnsbl/

Blacklist Zone(s)

dnsbl.kempt.net

Blacklist type

URIBL: A URI dnsbl is simply an anti-spam “black list” delivered via DNS which consists of domain names and 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.

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

Brand/ Network Resource/ Deliverability Harm - If your firm is impacted by threats shown below, you need to take immediate action as a laundry list of negative outcomes have potentially already begun ranging from significant deliverability issues to service termination from your ESP or ISP. If ignored, your brand reputation could be permanently tarnished and easily become associated in some circles with known spam organizations such as SpamHaus’s ROKSO or other similar blacklists.

Network Resource/ Deliverability Impact - Below are threats that could cause some significant delivery and reputational issues. At worst, you will experience continued delivery impacts and may be forced to purchase new sending domain and IP resources in order to achieve optimal deliverability.

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.


The recognized authority in email verification
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Impressionwise makes it easy for potential clients to evaluate our list cleaning services by offering a complimentary scan and report for a sample set of your data to illustrate the benefits of our services.

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