On Wed, Sep 24, 2008 at 11:05:21AM +1000, James Brown wrote:

> I've just set up DKIM on my mail system (via Astaro Security Gateway).
> 
> If I send an email to [EMAIL PROTECTED] to comes back  
> saying:
> 
> DKIM check details:
> Result: fail (signature doesn't verify)
> 
> The same thing happens sending from my iPhone.
> 
> But it works fine sending from the same computer using Thunderbird. Or  
> if I use webmail (Roundcube or Ilohamail) to send the email.
> 
> All are sending through the same mail server (Postfix), same account,  
> with and without SSL.
> 
> Has anyone had any similar problems with DKIM and Mail.app?

Is the incoming message 8-bit MIME? Is it signed first and down-converted
to 7-bit later?

The MX host for verifier.port25.com seems to offer 8BITMIME, how does
your mail get there after it is signed?

smtp-finger: < 220 verifier.port25.com (PowerMTA(TM) v3.5r1) ESMTP service ready
smtp-finger: > EHLO amnesiac.example.com
smtp-finger: < 250-verifier.port25.com says hello
smtp-finger: < 250-ENHANCEDSTATUSCODES
smtp-finger: < 250-PIPELINING
smtp-finger: < 250-CHUNKING
smtp-finger: < 250-8BITMIME
smtp-finger: < 250-AUTH CRAM-MD5
smtp-finger: < 250-AUTH=CRAM-MD5
smtp-finger: < 250-XACK
smtp-finger: < 250-SIZE 0
smtp-finger: < 250-VERP
smtp-finger: < 250 DSN

-- 
        Viktor.

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