Am 28.12.2012 19:54, schrieb Michael Heydekamp:
Am 28.12.2012 11:12, schrieb Andreas Dick:
But, I have the idea. It is Exim (as our MTA) that add the Return-path.
my MTA is exim@debian/lenny via smarthost
Don't you think that lenny is too old to be secure?
I would say that my emails are sent with Return-Path... but you are able to check yourself :-)
...
Exim rewrites the header, and it does it by design (for whatever reason) to write it to "Return-path:".
See: http://www.exim.org/exim-html-current/doc/html/spec_html/ch-generic_options_...
Weird, but a fact.
And this ist not only in the last exim-version. It is also in 4.69 (your version) and 4.72 (our version).
See:
http://www.exim.org/exim-html-4.69/doc/html/spec_html/ch-generic_options_for... and http://www.exim.org/exim-html-4.72/doc/html/spec_html/ch-generic_options_for...