mynetworks=168.100.189.0/27
server_acl=permit_mynetworks,reject
address=168.100.189.2
mynetworks=!168.100.189.2,168.100.189.0/27
address=168.100.189.2
address=168.100.189.3
mynetworks=fail:1
address=168.100.189.4
server_acl=fail:1,reject
address=168.100.189.2