About this DNSBL
The block list at WebEquipped.com contains the IP addresses
of hosts that the maintainers and their private parties do not wish to receive
You may use this DNSBL for your private purposes without
guarantee of any kind. Any address may be added and removed from the list
at any time, depending on judgment of its maintainers. If you decide to
use our DNSBL and you like it, please subscribe to our
. Doing so will allow us to make a reasonable attempt
to inform you of any upcoming changes.
What is a DNSBL and how does it work?
Name Service Block List
) is a "black list" of IP addresses including
whole networks. This black list does not block email it blocks email servers.
For example: Persons using an email client like Outlook to send email deliver
it to a server on which thier account exists. That mail server authenticates
that persions account information and on behalf of that person delivers
the email to the destination address(es). If that mail server is black listed
then the email gets rejected and sent back to the sender with the error
Access to our black list is publicly available via
DNS Query. A mail server that uses a DNSBL will check the presence of an
IP in the list by looking up an 'IN A' record of an entry in that zone.
A mail server that uses a DNSBL takes the IP address of the sender and reverses
the octets that make up the IP address (example IP: 192.168.0.25) and appends
it to the zones name. In the case of those mail servers using our DNSBL
it would look like this: 18.104.22.168.dnsbl.WebEquipped.com. If the mail
server receives a reply of 127.0.0.2 then that IP (192.168.0.25) has been
black listed. Then it is up to that mail server as to how to handle the
email. More detailed explanation about reverse DNS can be found at
How do addresses get listed?
The decision of blocking any email from a mail server
is up to recipient of the email. If we are the recipient in this case, then
there are several ways in which we determine if an IP should be listed.
For security reasons we will not divulge all of the methods we use, but
here are some of the classic ways in which our systems determine spam from
1. We use one or more publicly available DNSBL, URIBL and/or SURBL services on the internet to confirm delivery legitimacy.
2. Connecting to one of our mail servers and attempting to deliver email to multiple accounts that do not exist for the given domain.
3. Keywords: you know the explicit sex related type or pill pushing trash.
4. We also use several modified statistical methods to determine if an email fits the
profile of spam. It is compared against various types of spam that we have cataloged over long periods of time.
How can I remove my address from the listing?
If you're the administrator of a blocked server, and you
would like us remove your IP(s) Your only option is to complete the following
and submit it. We will then consider
the removal of your IP address(es) from our list.
Can I add an address of a spammer to the DNSBL at WebEquipped.com?
You can't! We do not add any addresses unless they are
a problem to our servers. You can however, become
a supporting member
and thus be given the ability to help maintain our DNSBL.
How can you help fight spam? Here is a list of sites we recommend you visit.