[swinog] Broken SPF Check implementation in Microsoft Exchange Forefront?

2013-12-02 Thread Benoit Panizzon
Hellou Today, I discovered, that emails whose envelope sender matched the DNS SPF record, but whose From: Header did not (like after the envelope sender has being rewritten by SRS) were rejected by a hosted exchange server provider. I got in contact with that admin and he told me that this was

Re: [swinog] Broken SPF Check implementation in Microsoft Exchange Forefront?

2013-12-02 Thread Klaus Ethgen
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 Hi, Am Mo den 2. Dez 2013 um 16:54 schrieb Benoit Panizzon: > Today, I discovered, that emails whose envelope sender matched the DNS SPF > record, but whose From: Header did not (like after the envelope sender has > being rewritten by SRS) were r

Re: [swinog] Broken SPF Check implementation in Microsoft Exchange Forefront?

2013-12-02 Thread Marc SCHAEFER
On Mon, Dec 02, 2013 at 05:20:25PM +0100, Klaus Ethgen wrote: > I had one of this issue in Univerity too. same in the cantonal mail server ne.ch. customer had to hack a pipe to a procmail to change the enveloppe so that a simple mail reflector works. ___

Re: [swinog] Broken SPF Check implementation in Microsoft Exchange Forefront?

2013-12-02 Thread David Schweikert
Hi Benoit, On Mon, Dec 02, 2013 at 16:54:59 +0100, Benoit Panizzon wrote: > Today, I discovered, that emails whose envelope sender matched the DNS SPF > record, but whose From: Header did not (like after the envelope sender has > being rewritten by SRS) were rejected by a hosted exchange server