Re: DKIM verification failures due to message body change when using HTML email

From: Murray S. Kucherawy <msk_at_blackops.org>
Date: Tue, 11 Dec 2012 14:41:21 -0800 (PST)

On Tue, 11 Dec 2012, Quanah Gibson-Mount wrote:
> For the Linux thunderbird client, Yahoo! shows:
>
> Authentication-Results: mta1038.mail.ird.yahoo.com from=horret.fr;
> domainkeys=neutral (no sig); from=horret.fr; dkim=permerror (bad sig)
>
> Otherwise:
>
> Authentication-Results: mta1097.mail.ird.yahoo.com from=horret.fr;
> domainkeys=neutral (no sig); from=horret.fr; dkim=pass (ok)
>
> So I'm at a total loss here. :/

I suggest turning Diagnostics and KeepTemporaryFiles on, then sending once
from each client, and comparing them. You'll at least see how the two
clients behave differently, which might give some hints.

Do those same two clients encounter the same issues with
sa-test_at_sendmail.net or autorespond+dkim_at_dk.elandsys.com, or any of the
other public verifying auto-responders?

-MSK
Received on Tue Dec 11 2012 - 22:41:37 PST