Impressionwise Email Verification and Spam Trap Removal

Documentation


Threat Level Guide

Our cleansing methodology is focused on the health of your sending network resources. The cleaner the domain and IP the better the delivery.

In short: bracket-left A Clean List = Clean Email Resources = A Highly Deliverable List = High Recipient Engagement bracket-right

Threat Intelligence Detail

Impressionwise’s data intelligence platform is based on policy-driven rule sets and real-time scanning algorithms that use a multi-layered approach to identify, validate and protect against a wide range of email-based threats. These threats, ranging in severity, are broken down into categories which allows us to provide unprecedented, detailed insight.

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. View threats...

AB.SURBL.org URIBL
Trap
Unspam Technologies
Trap
Abuseat.org (CBL) RBL
Trap
URIBL.org URI-RBL
Trap
BBFH RBL
Trap
WS.SURBL.org URIBL
Trap
Invaluement RBL
Trap
Bounce.io Seed Network
Mole
JP.SURBL.org URIBL
Trap
General Contributing Network
Mole
MailPolice.com RBL
Trap
HostKarma RBL Mole
Mole
MainSleaze SpamBouncer RBL
Trap
MailPolice Contributing Network
Mole
Project Honey Pot (http:BL) RBL
Trap
SORBS Contributing Network Mole
Mole
SORBS.net-BBFH.org RBL
Trap
SpamCop Mole
Mole
SpamCop RBL
Trap
SpamCop Network Mole
Mole
Spamhaus Contributing Partners
Trap
SpamHaus Network Mole
Mole
Spamhaus DBL URI-RBL
Trap
Spamstophere/ Spamanalyzer.com
Mole
SpamHaus RBL
Trap
UCE Protect Network Mole
Mole
SURBL.org URI-RBL Trap
Trap
Unspam Technologies RBL
Mole
UCE Protect RBL
Trap

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. View threats...

Abusix RBL
Trap
Spambulance RBL
Trap
AHBL.org RBL
Trap
SpamCannibal RBL
Trap
Backscatterer.org RBL
Trap
SpamEatingMonkey.net RBL
Trap
Barracuda RBL
Trap
Spamgrouper.com
Trap
BBQ RBL
Trap
SpamRats.com RBL
Trap
Cloudmark Anti-Spam Network DNE
Trap
StopSpam.org RBL
Trap
Day Old Bread Intelligence.com URIBL
Trap
V4BL RBL
Trap
DeadBeef RBL
Trap
WPBL (Weighted Private Block) RBL
Trap
Fail2Ban/Blocklist.de Reporting
Trap
Invalument Contributing Network
Mole
Internet Defence Systems RBL
Trap
MaySoft SpamSentinel DNE
Mole
Kempt.net RBL
Trap
NJABL.org Network Mole
Mole
MailSpike RBL
Trap
Redcondor Anti-Spam Network DNE
Mole
Mobile Device FTC DNE
Trap
SURBL Contributing Network
Mole
NJABL.org RBL
Trap
SURBL JP URIBL
Mole
NoSolicitado.org
Trap
SURBL OB (Outblaze)
Mole
NSZones URIBL
Trap
SURBL SC (SpamCop Site)
Mole
Passive Spam Block List
Trap
SURBL WS (Bill Stearn)
Mole
Polar Communictions RBL
Trap
URIBL Contributing Network Moles
Mole
RFC-Ignorant RBL
Trap

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. View threats...

Abuse.ch Swiss Security Network
Trap
PowerWeb DNSBL
Trap
BlakJak RBL
Trap
Quorum Listing Service
Trap
Burnt-Tech DNSBL
Trap
Redhawk RBL
Trap
CanTV DNSBL
Trap
S5H RBL
Trap
CASA RBL
Trap
Scientific Spam RBL
Trap
Choon RBL
Trap
Shlink URI-RBL
Trap
Cyberlogic DNSBL
Trap
Solid Clues RBL
Trap
Cymru Bogon DNSBL
Trap
South Korean Network RBL
Trap
Cyveillance Threat Intell Net
Trap
Spamblock DNSBL
Trap
D. D. N. S. B. L. RBL
Trap
SpamChampuru DNSBL
Trap
dnsbl.othello.ch DNSBL
Trap
SpamLab RBL
Trap
DNSBLChile RBL
Trap
SpamStinks Anti-Spam
Trap
DRBL
Trap
Technovision Spamsource RBL
Trap
DSBL.org RBL
Trap
Tiopan Consulting RBL
Trap
Dynamic Domain Name Spoofers RBL
Trap
Toasted Spam
Trap
eBlockade.com RBL
Trap
TornevallNET DNSBL
Trap
EFnet RBL
Trap
TRBL DNSBL
Trap
Emailbasura DNSBL
Trap
TRIUMF.ca DNSBL
Trap
FusionZero RBL
Trap
Unsubscribe Blacklist (UBL) RBL
Trap
HostsControl DNSBL
Trap
Webequipped DNSBL
Trap
IBM DNS Blacklist
Trap
ZapBL DNSBL
Trap
Intercept DNS RBL
Trap
Zenon.net RBL
Trap
Interserver DNSBL
Trap
ZoneEdit combined DNSBL
Trap
iX RBL
Trap
Abuse.ro URIBL
Mole
JIPPGs RBL Project
Trap
Barracuda Contributing Network
Mole
Karmasphere RBL
Trap
Clean-MX Anti-Spam Mole RBL
Mole
KISA-RBL
Trap
Cloudmark Contributing Network
Mole
MXRate RBL
Trap
Commtouch Anti-Spam Network DNE
Mole
NiX Spam DNSBL
Trap
NSZones URIBL
Mole
No-More-Funn RBL
Trap
Othello.ch DNSBL
Mole
NoToSpam.com
Trap
ReturnPath Contributing Network
Mole
Nukesapm.org RBL
Trap
SURBL PH (Phishing/ Malware Site)
Mole
ORBITrbl RBL
Trap
TrendMicro Contributing Network
Mole
Pedantic RBL
Trap
Websense Anti-Spam Network DNE
Mole

In addition to the blacklist threats mentioned above, Impressionwise's Delivery Intelligence scans focus on items that are specific to your list's deliverability that may have a less-lasting negative impact or cause harm to brand and reputation. These categories may impact your ability to deliver, and if hit, may cause unnecessary bouncing.

Address Verification

Once first tiered DNE (do not email) elements (traps, moles, parked sites, etc.) have been removed, the second greatest threat to your message deliverability and eReputation is bounced addresses. Bounces come in many forms, some temporal (mail box full, etc.) while others are permanent notifications (mailbox not found, etc.) Even if you have a trap-free or “clean” list, sending to bounced email addresses can cause great harm as most large ISPs (AOL, Yahoo, Gmail, Hotmail, etc.) use this information in the form of a bounce rate to determine whether or not to accept any future mail from your sending domain.

  • Failed Domain DNS Validation
  • Invalid Recipient*
  • Malformed Domain Name
  • Malformed Recipient Address
  • No Domain MX Record Present
  • Non-Responsive Domain MX
  • Null MX/ Domain Black hole

Parked Resources

This site intelligence gives you the leverage of avoiding sending email traffic to millions of unused and parked website domains. Since parked domains have previously not been configured for email by the owner, any recipient is by definition, invalid and being spammed as they receive email in the form of a catch-all/role account.

  • Domain Suspended or Expired
  • Parked Site/ Domain
  • Domain For Sale/Cyber-Squating
  • Domain Pending Renewal or Deletion

Dormant Accounts

Email addresses are not permanent. When there has been no login activity for a long period of time, the recipient account is defined by the provider as “inactive” and turned into a form of unknowing collaborator with no non-delivery report (NDR) indicating “no such user” or “mailbox not found” being sent as a response. Thus any email sent during this period of time before account deactivation is assumed, in the collective, as spam and its email signature mapped and used to block any email to other active recipient accounts within the domain.

Discretionary (Catch-Alls)*

These addresses, commonly referred to as “Accept Alls”, contain a domain-wide setting that accepts every single email received. It can be impossible to determine the validity of the address. These types of email addresses are commonly used in small businesses, and in some cases, the server will accept the emails sent and then bounce it back to the sender. At Impressionwise, we have the ability to determine these addresses are not riddled with spam traps or other severe threats, so a potential bounce is your greatest threat when sending to these recipients. If your list was obtained organically and you are confident in the address's validity, these addresses may be used at your discretion.

* Feature only available with Verification Plus Threats service.

Need help? If you have any questions, please contact us for assistance.


The recognized authority in email verification
and list cleaning services

100.9 billion

18.4 trillion

6.6 billion

Emails Processed Data Points Analyzed Threats Discovered

With an average of 117,545 new email-based threats found each month, 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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