Hi list Do you know whether there is a possibility to reject invalid return paths in postfix?
The problem is, that we get spam with a header-line like the following and would like to reject those messages: Return-Path: <MAILER-DEAMON> AFAIK the return-path above is invalid, as there is only the following formats allowed: Return-Path: <john....@example.org> Return-Path: <> As I did not find a option in postfix to reject those mails, i could write a header check with pcre. But before I will do this, I'd like to verify whether there is really no option in postfix to set this? Regards raf
