Postfix config doubts

Hi all,

I currently have configured a RedHat Linux box with postfix,courier-imap and mysql to host virtual email accounts. Can any one let me know how do I setup 'Quota' limit for postfix virtual users. Currently i have two options, either we can use Maildrop, to implement this, or we can use VDA. I want to know if there is anyother option to achive the 'Per User Quota' in the above combination.

Note: All virtual users are under one uid and gid.

Thanks in advance Kumarasamy Mani

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