[Off-Topic] Handling automatic replies sent to "from" and ignoring the "return envelope"

Hello, I guess this message is off-topic as it is only loosely related to postfix. You may stop reading this now if you are non interested in such topics. --- I am responsible for a mailing list with roughly half a million subscribers. The flow is outgoing only as we send a newsletter to subs

Sending email from a pool of IP addresses

Hello, I know this question has been discussed on this list* but no suitable solution was provided for our SMTP server settings. A patch** is published but reports on this list say that it does not work. I am responsible for a medium sized mailing-list, through which one email is sent per day to