Tag: spamcannibal
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Expired domain led to SpamCannibal’s blacklist eating the whole world
The first line of defence in many a spam filter is to query one or more DNS blacklists to see if the sender’s IP address (and sometimes their domain) is listed as a known spammer. As the name suggests, a DNS blacklist is queried over DNS: to do a lookup for the IP address 1.2.3.4…
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Expired domain led to SpamCannibal’s blacklist eating the whole world
The first line of defence in many a spam filter is to query one or more DNS blacklists to see if the sender’s IP address (and sometimes their domain) is listed as a known spammer. As the name suggests, a DNS blacklist is queried over DNS: to do a lookup for the IP address 1.2.3.4…