DNSBL’s or DNS Blacklists also known as Domain Name System Blacklists, are blocking lists of spam or unsolicited messages that allow a web owner to block all the messages, having a history of transmitting spam. Some people like to call them blacklists while others prefer block lists. As the name clearly gives an idea, these lists are made on the basis of the Internet’s Domain Name System, which translates complicated, numerical IP addresses into domain names, making the lists easier to be read, used and searched.
Based on IP addresses, these blacklists contain IPs, generally of e-mail servers that a blacklist maintainer might have received spam of some kind from in the past. That server would be blacklisted, and all the messages sent from it would be either flagged or rejected by all the websites using a particular blacklist. There are many such lists available over the internet, and each one has been compiled with different criteria. However, some lists might work better than the others which make some list maintainers more respectable and trustworthy than others.
The first DNSBL was known as RBL, and sometimes people refer to “RBLs” while talking about spam blocking. People usually use RBL interchangeably with DNSBL.
The blacklist search tool or blacklist lookup tool is a tool that enables you to look up the IP address or domain name to see is it is enlisted in a blacklist or an anti-spam database. Domain blacklist check or Google blacklist check has never been so much easy. You can use this tool to verify that whether your website is blacklisted on a specific database or not. Also, you can see if it is flagged by any.
It, indeed, is a great tool for SEO that allows you the access by simply entering the URL of your website and clicking on the “Lookup” button to start the search and see the results of the Blacklist Search.
The DNSBL checker or blacklist lookup tool offered by Dupli Checker is totally free for everyone to use. You can use this tool to see the status of your website’s IP across various DNSBL lists without downloading any software or signing up. Our DNSBL checker is the most hassle-free way for domain blacklist check in a DNSBL list and IP blacklist removal.
The primary or let’s say the original use of domain blacklist check is to block mail. Most e-mail servers nowadays have DNSBL support either built in or a plug-in which allows a server administrator to block all emails from the domains or sites listed on a particular DNSBL. This could be an effort to minimize the amount of spam that users would be sent. More recently, DNSBLs have also been used as a part of spam scoring system, for instance, SpamAssassin.
If you’ve made it on a spam blacklist that is also referenced in a spam scoring system, then it is likely that your spam score could be increased by some time. If that along with other scoring tests performed, results in a high score above a certain level, it could either be discarded or directed to the spam folder.
Following these few simple steps for a successful Blacklist Removal Process:
The first and the foremost thing is to identify why you are there on the list. Each blacklist has its own criteria which can include policy listings, technical listings, and evidence-based listings. You can do this by visiting the blacklist website or by using a blacklist lookup tool for a specific domain name or IP address. Most of the blacklists give the reasons for general listing, but they won’t give access to the email IDs the spam was sent to.
Once you have determined a particular domain to be there on the list, now you can start your internal process of resolving that issue. Now you can also confirm that your mail server, network, and systems have properly been configured. Some of the common resolutions include fixing forward and reverse DNS records, scanning all machines on the network for viruses, STMP banners, patching operating systems, enforcing strong passwords and configuring routers more securely.
If you own a website, then it is highly recommended for you to check how your site stands on these databases. If your website has been registered as spam, but you have not been doing any such spamming activity, then it can greatly risk your reputation. We know that nobody likes to get in such a situation, having a website blacklisted. Find out which database has blocked or flagged your domain or IP and what changes you need to make to get your name off of that and restore your repute.
The domain or IP address of a website can get blacklisted as different people use it for different purposes. Some may use it for illegal or unwanted online activities. If this happens, then you can make the required changes and fix the issue using an efficient tool like ours to see which websites have flagged your website.
Use DNSBL Checker offered by Dupli Checker to see for a reliable Blacklist Lookup toady!