Hi, I am looking for a guide to Postfix configuration. I have an OpenSuse 11.2 system that is running 2 BBS systems independently, both of which are capable of receiving smtp mail on prot 25. What I would like to do is set up Postfix on the OpenSuse OS to receive all mail for both those domains and then send the relevant mail to the correct BBS. I would therefore have Postfix listening on Port 25 External and the 2 BBS applications listening on different ports on the localhost address. At least that is the plan.

Can anyone provide some pointers on how to do this. I want to do it and still make sure Postfix is secure and not accidentally open up any nasty relay holes etc etc.

Thanks.

I believe you can use postfix's transport maps to accomplish this.

example.com smtp:localhost:2025

Something like that is going to route mail destined for example.com to port 2025 on the local machine. Make sure you run postmap /etc/postfix/transport after making any changes to the transport tables.

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Thanks, That worked a treat 8-)

I had to set the /etc/postfix/relays file as well. 8-)