2 respostas
We recommend they do align, as closely as possible. Obviously you'll have an Operational channel in Marketo, which won't align. And, it's unlikely "Email" will ever be a lead source for you (more likely that you would have "Forward to a Friend" as the source, or even classify those as "Referral" and "Forward to a Friend" is your lead source detail), but you still need to maintain that channel in Marketo. Short answer, yes.
Also, the way you plan to use lead source and lead source detail is another common best practice.