Re:One advantage DomainKeys has over SPF... (Score 1)

Your mail should look like this:

Sender: [e-mail]
From: [e-mail]
To: [e-mail]

From is the author of the message - Sender is the agent which is transferring the message.

i.e. a message can be From the CEO, while the Sender is the administrative assistant.

The upside on this approach is that it avoids mucking with Reply-To, which is something that can cause problems for some (mailing lists don't always like it)