Awesome. Thank you. That did the trick. Am Di., 15. Jan. 2019 um 13:22 Uhr schrieb Wietse Venema < wie...@porcupine.org>:
> Stefan Bauer: > > Hi, > > > > i would like that postfix always sends DSN, when requested by client and > > mail got forwarded to next-hop / final destination. > > Postfix implements a published RFC, and according to that RFC, > Postfix will send a 'relayed' DSN if: > > 1 - The sender requested DSN notification. > > And: > > 2 - The next-hop MTA does not announce DSN support, or you turn off > DSN support (smtp_discard_ehlo_keywords = dsn, silent-discard). > > Additionally, you can tweak the SMTP conversation with > smtpd_command_filter, smtp_reply_filter, and smtp_delivery_status_filter. > There are examples in the documentation of those parameters. > > Wietse >
