Hello Markus,
Thank you for pointing me to the problem. It works after removing the wildcard rule.
For some reason I did not consider the postfix config to be the culprit at all, we also have the same rule file on our main smtp server. But that one of course has additional config for configuring the users valid sender addresses from ldap which is not present on this local postfix. All understandable now.
Many thanks,
Thomas
Am 2023-09-25 15:27, schrieb Markus Schönhaber:
If you have turned on postfix' canonical mapping with the above configuration, then postfix will rewrite (in header and envelope) <everything>@ida.ing.tu-bs.de to sysgroup@ida.ing.tu-bs.de. To me, this seems to explain your observation just fine.
-- Dipl. Inf. Thomas Boroske
Institute of Computer and Network Engineering TU Braunschweig Hans-Sommer-Str. 66, D-38106 Braunschweig, Germany www.ida.ing.tu-bs.de