I have a java-based web service that sends out daily transactional emails to members using JavaMail to connect to a Postfix SMTP server at e.mydomain.com. Since the transaction email server is basically just an outgoing server (there are no mailboxes, etc.), the only real incoming mail are bounces addressed to something like this: bounce-7232-useremail=userdomain....@e.mydomain.com
I've been processing bounces manually and would like to automate the process. So I implemented a simple SMTP server in java using SubethaSMTP that only accepts bounced message email addresses and processes them by updating bounce counters and such. My database access is all via Hibernate, so I need to keep this process Java-based. I'm calling this bounce.mydomain.com and it is currently running on port 8025. http://code.google.com/p/subethasmtp/ I'm more of a programmer type and not a Postfix expert. I'm trying to figure out what the best configuration would be for these services. As I see it, I have several options: 1. Change the VERP addresses to be @bounce.mydomain.com and set up firewall rules that forward port 25 to 8025. This option would take Postfix out of the picture for processing bounce messages. I'm not sure what advantages/disadvantages this would cause. 2. Configure postfix to forward bounce type emails to port 8025. I don't know how to configure Postfix to do this. Any suggestions or assistance would be appreciated. 3. Learn some other and better way to do this, possibly with a Postfix policy service? I just learned about Postfix policy services from an answer to my StackOverflow question, but haven't been able to find enough information to determine how much work this would be or what is involved. http://serverfault.com/questions/180806/forwarding-only-bounce-messages-to-a-different-smtp-server I'd love to hear from any Postix users out there which method would be best and the reasons why. Thanks! Tauren
