RE: opendkim-genkey and "r=" tag

From: Murray S. Kucherawy <>
Date: Fri, 26 Aug 2011 13:18:05 -0700

> -----Original Message-----
> From: [] On Behalf Of Giovanni Bajo
> Sent: Friday, August 26, 2011 12:14 PM
> To: Murray S. Kucherawy
> Cc:
> Subject: Re: opendkim-genkey and "r=" tag
> OK thank you for the clarification. So it looks like our setup of using
> SenderHeaders is the correct current way of achieving mailing-list
> support. Any reason why "Sender,From" isn't the default for that
> option? It looks like it would make the right thing for most mailing
> list managers and simplify supporting them with opendkim, but I might
> be overlooking some other implications.

Simply that not all lists add a Sender field, and there's nothing preventing a spammer from adding one. If (as it is with milter) the DKIM verdict is distilled down to a single yes/no, the preferred domain should probably be the one the user actually will see, which is almost always the From field.

Received on Fri Aug 26 2011 - 20:18:14 PST

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