On Mon, Dec 07, 2009 at 11:10:15AM +0100, Raffael Schmid wrote: > 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>
Almost certainly the actual envelope sender was "MAIL FROM:<>", and the "MAILER-DAEMON" was created during further processing on your system. For example, default configurations of pipe(8) replace empty sender addresses with "MAILER-DAEMON". -- Viktor. Disclaimer: off-list followups get on-list replies or get ignored. Please do not ignore the "Reply-To" header. To unsubscribe from the postfix-users list, visit http://www.postfix.org/lists.html or click the link below: <mailto:majord...@postfix.org?body=unsubscribe%20postfix-users> If my response solves your problem, the best way to thank me is to not send an "it worked, thanks" follow-up. If you must respond, please put "It worked, thanks" in the "Subject" so I can delete these quickly.