i found it, in case that someone will have the same problem: it was mailman service i deleted the symbolic link from apache2 and stopped mailman...
Also, this machine are using disks 7MB/s constantly.... ISPC is completly empty. No web, no mail, no dns... Look at the disk speed when i...
I just installed ispc under ubuntu18. No another config. I think there is a scrypt using CPU, but i can't find it. I have a powerful machine, so...
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