intergenia ↔ mxlogic connection issues

Hello list,

most /24 subnets from 85.25.0.0/16 network (PlusServer AG/intergenia AG) seem to be blocked on mxlogic.net inbound email servers (208.65.144.2 208.65.144.3 208.65.145.2 208.65.145.3).
Could someone from both parties please check it?
I tried to contact MX Logic by whois contacts (dnsadmin@mxlogic.com and hostmaster@mcafee.com) but got no answer.

Sorry for the noise,

Kai