Message size limit per user Postfix

Hello!

I have Ubuntu 12.04 - ISPConfig 3.0.5.1
Want to configurate message_size_limit per user. Now I have 30MB for all server.
But for example I want to setup for [email protected] - message size iz 20MB and for [email protected] message size is 50MB.

Someone try to configurate this things on Postfix?

Thank you.

 

You need a policy-server

http://www.postfix.org/addon.html#policy

 

Thank you for reply.
If I use policyd deamon, it will be work with ISPConfig without problem?

 

Can you advise, which one i am need to use?
I try policyd, but it is work only with email bandwidht NOT not with single email per user.