How to specify different policies for different unix sockets?

[Hamy]

Hi, i would like to use unix socket instead of inet in amavisd for postfix to communicate with it and then secure it by setting appropriate permissions. However, i dot not want to disable the default AM.PDP-SOCK policy which is required for amavisd-release and maybe other scripts(and amavisd-milter) to work. also i might need to have multiple smtp unix sockets in future with different set of policy banks applied to them.How can one do so? it's easily possibly to do that with inet ports, but what about unix sockets?
PS: just to show I've done my research before asking, i have found 2 related topics:
1- http://serverfault.com/questions/656367/postfix-amavis-use-unix-soket-for-communicationThis approach basically replaces the built-in defined socket and can only be done for one instance of unix socket.

2- https://lists.amavis.org/pipermail/amavis-users/2015-April/003549.htmlThis is exactly my question. unfortunately, it's left an answered.
Any help would be greatly appropriated.
Best Regards,
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