Hi Denise, I agree with Sandy's response but just in case, if you haven't yet, check whether SPF has been configured correctly - I've seen this issue when authentication has not been set up. Inga ... View more

I am a little late to the party here... we developed a solution (with someone's help on this thread!) which we used to distribute open source. It's now a one-time affordable install fee and includes a workshop on taxonomy / tracking utm parameters. Yes-without a special code, you are lucky to capture Last Touch, but only and only if the lead landing on the web page fills out the form right away. If they flipped through a couple of pages and came back to fill out the form, they will inevitably lose all utm parameters. We utilize javascript to capture this information and then, it's automatically disseminated into marketo fields. (But our solution will record both First Touch and Last Touch; First Touch is especially useful to those in tradition B2B models as the lead lifecycle is longer). Check the solution out on our site or on Launchpoint or let me know if you have any questions! http://romanoff.live/solutions tracking marketing attribution - ConversionPath » Marketo LaunchPoint® ... View more

Thanks for the mention Grégoire Michel​ ! Sid, I'll be happy to walk you through the solution. We use it internally for our company as well. Let me know if you'd like to connect. (sorry for being slow on response, my login was temporarily dead.. ) Cheers ... View more