The ips.backscatter.org is different than other DNS based blacklists. To use ips.backscatter.org, you are not looking for a normal DNS response of an IP address to a reverse IP address lookup. To use ips.backscatter.org, you will need to determine specifically how to have your mail server look at each individual email, parsing specifically the MAIL FROM: header, looking for a value of "" or "postmaster". If you detect those values, you should block or score against that sender.
It would be a bad idea to permanently block the sender, as backscatter can happen from large and well known free mail providers. One viable option is to reject the email, but not reject the host.
The ips.backscatter.org is different than other DNS based blacklists. To use ips.backscatter.org, you are not looking for a normal DNS response of an IP address to a reverse IP address lookup. To use ips.backscatter.org, you will need to determine specifically how to have your mail server look at each individual email, parsing specifically the MAIL FROM: header, looking for a value of "<>" or "postmaster". If you detect those values, you should block or score against that sender.It would be a bad idea to permanently block the sender, as backscatter can happen from large and well known free mail providers. One viable option is to reject the email, but not reject the host.
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