Stefan Bauer: > thank you for your help! > > If i understood you correctly, i set in transport: > > domain1.de exchange: > > In master.cf > > exchange unix - - n - - smtp > -o smtp_sender_dependent_authentication=no > -o transport_maps=hash:/etc/postfix/transport_internal > > And in transport_internal > > domain1.de smtp:192.168.124.5:2525 > > but this way, postfix is doing a MX-lookup for domain1.de and not honoring > transport_internal as it seems.
Transport map lookups happen before choosing the SMTP client, therefore you made a mistake updating the transport map. Try: postmap -q domain1.de hash:/path/to/transport Wietse