backscatterer. The problem of delivering letters to Italy, what to do?

Question

linux

As they say, nothing foreshadowed trouble. But at a certain moment, according to the profile of work, we had to face such a problem, our partners abroad (in particular, the bulk of the addresses are registered in the .it domain zone (Italy)) stopped receiving letters. Moreover, in return letters marked Mail Delivery System, it was indicated that this letter was spam. I can say with a guarantee that there have never been any spam mailings from our domain, as well as from IP addresses. Based on the information found in one of the articles on Habré, the spam index of our IP was checked, at different times it ranged from -1 to 4 units, which is not sufficient to blacklist external spam servers. After checking by means of services providing information on entering IP addresses into spam databases, it turned out thatwww.backscatterer.org(not on one of the other spam servers it was exposed). The most interesting thing is that it was brought there in November 2011, but until recently we had no problems with sending and receiving mail. One of the jokes of this server is that they require in the context of 110 USD. for removing your domain or IP address from the Blacklist. Although the site states that if the domain is inactive in the context of sending spam within 4 weeks, it is deleted automatically. The most interesting thing is that the domain is automatically added to the server's Blacklist about a week before the end of the above period, although no spam is sent during this period. There was a version that this host is trying in this way to simply “cut the dough” from the owners of the illuminated domains. And the most interesting thing is that there are no contact details on the site, but only a form of payment for a fine for removing a domain or IP address from a spam database. As a result of surfing the Internet, I came across a comment on one of the foreign sites with a similar problem, which stated that after paying money to the server owners, their IP was removed from the Blacklist for up to 2 weeks, and then again entered into the spam database on the same server. This was followed by a call: either return the money or remove it from the spam database. And given that there is no contact information on the site, it is logical to assume that again it is necessary to pay money, which in turn is expensive. that after paying money to the server owners, their IP was removed from the Blacklist for up to 2 weeks, and then again entered into the spam database on the same server. This was followed by a call: either return the money or remove it from the spam database. And given that there is no contact information on the site, it is logical to assume that again it is necessary to pay money, which in turn is expensive. that after paying money to the server owners, their IP was removed from the Blacklist for up to 2 weeks, and then again entered into the spam database on the same server. This was followed by a call: either return the money or remove it from the spam database. And given that there is no contact information on the site, it is logical to assume that again it is necessary to pay money, which in turn is expensive.
In the light of the above, I would like to ask the respected Khabrovites with the phrase Zoshchenko - “What to do?”.

Answer 1

Well, the one who blocks letters on the backscatter is Evil Pinocchio Himself. For even on the service itself it is written that ips.backscatterer.org is not a blacklist of spammers, and you need to use it in a special way.
The reason for the backscatter from your server is most often that it has relay of some domains configured on it, and at the same time the server does not check the existence of mailboxes on these domains in advance, during the SMTP session. Those. accepts letters for forwarding to non-existent mailboxes, then fails to deliver them, then hits the sender's address (forged by an attacker).

Answer 2

> In the light of the above, I would like to ask the respected Khabrovites with Zoshchenko's phrase - "What to do?".
Maybe, as Julius Caesar said, "go the other way"? In the sense, change the IP address of the server.

Answer 3

buy vpsku (preferably two) for a dollar a month, set up postfix/exim/sendmail there to your liking and incite ekschi on a smart host
PS
Or ask the provider to open riley from their mail server.