I heard that MAILOP has «the DNSBL we don't mention» and Libera Chat has also had problems with a «certain pay-to-remove DNS blocklist» - can anyone help me with knowing which is this?
I heard that MAILOP has «the DNSBL we don't mention» and Libera Chat has also had problems with a «certain pay-to-remove DNS blocklist» - can anyone help me with knowing which is this?