Blacklist - Online check for black sheets

Black list

Our life, work and communication are closely related to the Internet. Each user has an e-mail address where it is necessary to transmit important information. It happens that the letters to the addressee do not reach and we need to figure out the reason.
Often there is a need to check for a suspicious AI pi that sends out spam and behind which may be hidden fake bots and hackers. In the article we will analyze in detail the purpose of checking the test, the criteria for the delivery of letters, the reasons for their falling into the blacklist and the principle of the service of the check.

Why do I need to check the IP for its presence in spam databases

If your ah pi got into the spam database, the mail will deny you spam filters, even if you are a decent user and have never sent spam. The reasons for this are simple:

  1. chances are that you got an IP lit by spam,
  2. The reader decided that he did not need your newsletter.

We can say with confidence that sooner or later any ah pi will fall into the blacklist. And in order to check whether you are specifically lit up in one of the world's 220 largest spam lists, or you need to check any suspicious protocol yourself, use the proxy checker service.

Criteria for delivering letters to the addressee

So, when we start sending out information, we use the IP of our Internet provider. If we make a newsletter using a special service, their protocol is used. And it is precisely pi pi that can derail even the coolest advertising campaign, the development of which took months of work. Let's see why.
After sending, the letter passes through spam filters, which decide whether the letter will reach the addressee. At the same time, spam filters are guided by the sender's rating and message content. That is why, remember, the cleaner the IP is, the higher the rating and the more likely it is that the sent letter will be sent to incoming messages, and not blacklists. If the rating is high, the spam filter does not bother at all and does not “read” the letter, but simply gives the go-ahead for sending.

What affects the reputation of IP

So, the main reasons IP ingress into blacklist are:

  1. The number of mailings from one server,
  2. A lot of complaints and bans on the sender’s mailing,
  3. targeted spamming,
  4. Violation of the unspoken rules of behavior on the Internet,
  5. If the letter contains links to those domains that have already been blacklisted,
  6. Incorrectly designed text from the point of view of the spam filter.

It so happens that you are clean and there is nothing to complain about, and your emails still appear in the spam database. In this case, there is a chance that you got a “bad” IP or the server got the IP from the blacklist. Often this happens if you use virtual mailing services, rather than professional ones, where dedicated IP is used. We recommend using only professional mailers.

The principle of the proxy checker

So, we already know that the IP check service is created in order to quickly obtain information about the protocol. The principle of operation is as follows:

  1. you need to enter the IP for verification,
  2. then you must click the "check" button.

After a couple of seconds, you get the result in the form of a list of DNSBL networks from several databases, or the answer is "yes" or "no." That's all. Simple, fast, informative.