Re: [RCD] How to fix incorrect CT-declaration "text/x-mail" for .eml attachments?

Am 27.12.2012 23:53, schrieb Michael Heydekamp:

First: After some more investigation, it looks as if almost ALL messages that came in through our server do carry a header "Return-path:" (opposed to "Return-Path:"). I have no idea yet who is responsible for that (Exim, dovecot...?), but there is definitely some header munging happening somewhere. :-(

But, I have the idea. It is Exim (as our MTA) that add the Return-path.

But as this is a pretty standard Debian Squeeze server, we're for sure not the only ones who will be running against this brick wall.

And Exim is the Standard Debian MTA.