Calling to sendmail without AF_NETLINK causes:
> sendmail: fatal: inet_addr_local[getifaddrs]: getifaddrs: Address family not supported by protocol
and without AF_INET/AF_INET6:
> sendmail: warning: inet_protocols: disabling IPv6 name/address support: Address family not supported by protocol
> sendmail: warning: inet_protocols: disabling IPv4 name/address support: Address family not supported by protocol
Move the configurePostfix option one level up, since it now also
reconfigures the reportd systemd unit.
Same as with other services giving postfix access, this needs to happen
for the postfix user. Adding supplementary group permissions to the
systemd unit does not propagate to child processes that ultimately call
the unix domain socket.
