Email redirection and SPF

[Claude Paroz <claude 2xlibre net>]

Hi,

When I'm sending a mail to jhs gnome org, the delivering fail with the
following message:

Reporting-MTA: dns; menubar.gnome.org
X-Postfix-Queue-ID: 0413C7500D0
X-Postfix-Sender: rfc822; claude 2xlibre net
Arrival-Date: Thu,  1 Jan 2009 21:44:22 +0000 (GMT)

Final-Recipient: rfc822; johannes schmid gmx de
Original-Recipient: rfc822;jhs gnome org
Action: failed
Status: 5.7.1
Remote-MTA: dns; mx0.gmx.net
Diagnostic-Code: smtp; 550-5.7.1 {mx088} The recipient does not accept
mails
    from '2xlibre.net' over foreign mailservers. 550-5.7.1 According to
the
    domain's SPF record your host '209.132.176.177' is not a designated
sender.
    550 5.7.1 ( http://portal.gmx.net/serverrules )

Now whose fault is this? Is gmx.de check too aggressive? Is GNOME
redirection broken somewhere? Or is this a SPF design problem?

Claude