Hi,
I have a client with Postfix used as the main mail relay for a high volume e-commerce site. All mail to outbound destinations is relayed from sendmail processes to 2 main Postfix processes in the DMZ. Postfix relays everything to a separate Postini server outside. They've come to me with a requirement to do some mail filtering/routing at the Postfix layer. Postini can't do it, apparently. This is the first such request to manage mail routing in Postfix according to unique requirements. Until now everything is going through Postfix regardless of content, sender, recipient, etc. The new requirements requested are to: relay emails with Sender address f...@sub.domain.com and To address of *.bar.net to smtp.abc.bar.net All other mail should continue to go to the default relay (the Postini server). So, I looked into the manual and some list archives and found the sender_dependent_default_transport_maps option. I see how this could be used to alter the relay based on the Sender. OK. What I have not found and am for which I am requesting help, if anyone has a pointer or experience in this area, is the ability to combine the sender_dependent configuration with a recipient condition. Is there a straightforward way to configure this? Or do I need to script a custom filter? Or something else? Thank you for your time and any ideas or suggestions. Scott Stirling AT&T, Boston