Hi list. I am really new to postfix and email-under-the-hood in general.
I have written a milter which in some cases DISCARDs the message, so that it may not be sent at all. Is there a way of making postfix notify the sender that their email was discarded? I have tried REJECTing it, however sending just failed without further explanation for the user, although the reason appeared fine in the log file. To avoid client specific issues, I would need something similar to the undeliverable mail notifications emails sent to the sender's mailbox. Thank you very much! Stavros PS: I am using Postfix 2.6.6 on an old CentOS 6.8 x64
