Advanced Postfix setup

Looking for Postfix configuration support. Need Postfix to relay messages using same host/ip/adapter that mail comes in on with multihomed server. Dovecot is also installed and needs to be setup to retrieve mail from the specified domain. Example: server has 4 IP's (NAT-translated). Each IP is assigned its own domain. Email to be relayed will come in on a specific IP (example [login to view URL]). And it MUST go back out on the same IP (example [login to view URL]). Ensure that domains comply with RFC SMTP standards. Documented instruction for config files, logs, and operation. ## Deliverables 1) All deliverables will be considered "work made for hire" under U.S. Copyright law. Employer will receive exclusive and complete copyrights to all work purchased. (No 3rd party components unless all copyright ramifications are explained AND AGREED TO by the employer on the site per the worker's Worker Legal Agreement). ## Platform Ubuntu 10.10