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Black list information

   Here is black list information for avoiding receiving spam from hosts which cannot be blocked by the generic rules of the S25R anti-spam system.

Black list file for downloading
black-list.txt
Last update: Feb 22, 2017
In case you make your server download it periodically, please avoid downloading it more frequently than 4 times a day. It seems to be wasteful to download it twice in the time period 23:00--7:00 JST (+0900).

Usage
   Put the downloaded black-list.txt file under the /etc/postfix directory and specify it in the /etc/postfix/main.cf file as follows:

smtpd_client_restrictions =
  permit_mynetworks,
  check_client_access regexp:/etc/postfix/white_list,
  check_client_access regexp:/etc/postfix/black-list.txt,
  check_client_access regexp:/etc/postfix/rejections

   The listed hosts or domains are not certain that they don't send legitimate mail. Every rejection code is "450", which means temporary rejection. I recommend you to watch the rejection records using the rejection log sorting script, and whitelist the host (in the local white list file /etc/postfix/white_list) when you presume the message legitimate. I wouldn't like to recommend automatic permission by greylisting because the listed spam sending hosts are possible to retry sending.

Legend
Policy
   The black list lists hosts or domains which have sent spam (no matter whether it has been received or not) and satisfy any of the following conditions:
   Even if the host doesn't satisfy any of the conditions desribed above, it may be listed in case its behavior is evil (for example, it repeats sending advertisement mail illegally even though the business is legal), or it seems to be suspicious because of the domain owner or other information.

Request for information
   When you find a spam sending host which falls under the policy decribed above, or you find a listed host not evil, please report to me.
top report presentation (PDF) article (Ja.) white list black list watch tool applyers Q&A blog (Ja.) links history contact