A deeper look at the composite blocking list and how it works
Blacklisting or blocklisting is becoming a day to day routine in the world of technology and computing. These are part of the emerging issues that any internet user needs to have their knowledge at their figure tips to avoid running into a stand still when their thriving business suddenly comes to a standstill. Terms such as email addresses, IP addresses, domain names and user password become significant when the issue of blacklisting becomes mentioned. These are the key players here and are the one implicated during blacklisting. A blacklist can be viewed as some kind of a bridge that will allow certain things to pass and denied others of access. That is, they will allow certain either an IP address or an email address or any such component to function if at all it has not been mentioned somewhere explicitly.
What then is CBL?
The composite blocking list is a platform that works using a DNS based technology. DNS is simply domain name system, a server that is involved in inter-conversion of an IP address and domain names that are typed into a computer. CBL deals with email addresses carrying malicious components such as viruses. So as long as an email is depicting some sort of open proxies or having a component of a Trojan horse or any other form of malware that is meant to cause harm to a computer program, then it will immediately be transferred to CBL. How to delist from CBL depends on how well one understands this concept and mechanism of work of such a platform.
Who specifically will be listed by CBL
It has already been stated why an IP address is likely to end up at CBL. CBL actually has a preference for certain IP addresses and not others. Open proxy containing IPs are the ones that will not escape CBL at all. Open proxies are basically servers that any person who is accessing the internet is capable of using. They are meant in such a way that they only users within a given network group are able to use it for example in storing internet services. Other servers with similar characteristics such as WinGate or AnalogX are also not left out and will definitely be listed. Still for these IPs to be listed, they should have made an active connection to a machine possess by CBL. Everything else is generally not listed. For example open relays are left out. Open relay are those servers that allow a third party to relay emails. It usually an SMTP. CBL will also not scan other machines in search of IP addresses. Other IP addresses not listed include those that may be belonging to a known spammer but are known or dynamic IP addresses.
DNS zones of CBL
A DNS zone can be seen as a part of a domain name space present in the DNS that basically handles some administrative roles. The zones are useful in storage of DNS resource record information such as NS record, MX records and so many other records. Different zone types exist and include a primary zone, secondary zone, and stub zone, forward look up zone and reverse look up zones. For CBL, its primary DNS zone is cbl.abuseat.org. All this zones help in understanding how to delist from CBL.
How to use the CBL
Use of CBL involves a query kind of system that is located at their primary DNS zone. This is similar to how other blacklist platform work and should not present a big problem when considering on how to delist from CBL. Entry results are normally an IP address and a set of instruction on how to remove your IP address from the list in their databases. For one to have a smooth delisting procedure, it is advised they actually solve the underlying issue first before attempting to remove. This is essentially to avoid being listed again which of course will happen in case the issue is still intact. Something lose very important is that when one actually does it himself, it is a lot easier and faster compared to relying on the CBL stuff to do it. The self-removal process is takes you through a step by step procedure and also gives you full assurance that you have actually finished the process.
Dos and don’ts at CBL
CBL may just be another platform meant to destroy your business but in real sense, there are some things that will be strictly be done by CBL and others that will not be done at all. We have already considered a few in the preceding subtopics but it won’t be bad if we give them some deeper visit as just way of understanding how to delist from CBL. We already saw the difference between an open relay and an open proxy and said that CBL will detect the later but not the former. So in case your open relay is not functioning, the you will have to look elsewhere for possible causes of this. Also, CBL does not deal with either URLS or URIs. A URL is the abbreviated form of Uniform Resource Locator and it is basically a web address that specifies an addressee on the world web page. A URI on the other hand stands for Uniform Resource I identifier and can be seen simply as an arrangement of characters that identifies a particular resource. Another very important thing that has already been said is the fact that CBL does not search other machines to make connections and thus test if they are infected with a virus or not. Simply put, it does not get involved in probing. Yet another feature is the fact that CBL will not try and associate a person with the IPs they have received. It is basically known that the people who are listed have been involved in malicious acts such as sending of viruses and that is all.
In conclusion, CBL and other such platforms play a crucial role in making the world of computing very favorable for everyone. How to delist from CBL may seem complex but it is actually worth it.