TMDA integration with iRedMail

======== Required information ====
- iRedMail version: 0.8.6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: Centos 6.4 64-bit
- Related log if you're reporting an issue:
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I would like to implement TMDA (Tagged Message Delivery Agent) for specific users in iRedMail, has anyone done this? If so is there any resources/documentation that would help me get started? I'm new to TMDA but it appears it requires a linux user to be created and I would like to avoid that and integrate it with iRedMail users.

Thanks!
Luke