Our DNSBL (anti-spam DNS block list) monitoring kicked in today for all our managed mail servers and for customer servers in Infiniroot's managed monitoring. It seems that all mail servers were listed on the DNSBL "ix.dnsbl.manitu.net" at the same time.
Does that make sense? No.
A research of a couple of minutes revealed that the NixSpam DNSBL stopped their services, operating under ix.dnsbl.manitu.net.
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