Status of dnsbl.cyberlogic.net: BROKEN

As reported on the mailop mailing list on Friday May 25, 2018, the blacklist at dnsbl.cyberlogic.net now contains a "wildcard" DNS entry, effectively blacklisting the entire internet. If you use this DNSBL in your mail server configuration, you should remove it immediately, as it will impede your ability to receive legitimate mail.