Re: Best practice question: DKIM AND DomainKeys?

From: SM <sm_at_resistor.net>
Date: Thu, 14 Oct 2010 21:43:41 -0700

Hi Steve,
At 20:19 14-10-10, Steve Jenkins wrote:
>I was running some deliverability tests today sending to Yahoo accounts, and
>a look at the headers inside the Yahoo Mail client showed the following
>line:
>
>Authentication-Results: mta1083.mail.re4.yahoo.com from=gamerid.com;
>domainkeys=neutral (no sig); from=gamerid.com; dkim=pass (ok)
>
>I realize that DKIM is a newer standard, and that DomainKeys will likely
>fade away soon enough, but since there are large mail providers (like Yahoo)
>that still check for a valid DomainKeys sig, is there any benefit to having
>OpenDKIM sign with BOTH? Any drawbacks?

OpenDKIM cannot use DomainKeys to sign a message. You'll have to run
a different milter to do that.

DKIM replaced DomainKeys. There isn't any benefit is signing your
message with DomainKeys and large mail providers already support DKIM.

Regards,
-sm
Received on Fri Oct 15 2010 - 04:44:14 PST

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