Hello I just wonder whether my idea is technically possible to fullfill with Postfix. I already use sender based relaying which works fine. My problem is that I'm running a Postfix Server on my dynamic IP-Address. I would say for 80% of the receivers is no problem to send the emails directly (direct-mx). Some domains or receivers do not accept this due to dynamic IP block. No problem I thought I could set up a receiver-based relay, but unfortunatly I did not find anything about it in Postfix doc (maybe I looked for the wrong keywords). So my question is: Is there a way to conditionally relay emails based on the receivers address/domain? So I could send emails for defined addresses/domains via my ISP mailserver instead of direct-mx. Is there a way to do this in Postfix?
Thanks a lot for all tipps/hints Cheers tobi
