Changing CNAME

[Valerie_Armstro]

Hi Community,

We are changing our top-level domain (e.g. moving from olddomain.com to newdomain.com) and will need to update our CNAME branded tracking links, etc.

I have a few questions on how this will impact our current Marketo assets:

• When I update the CNAME from resources.olddomain.com to resources.newcompany.com and add resources.olddomain.com as a domain alias, will our pages automatically redirect?  In other words, would resources.olddomain.com/page1 redirect to resources.newcompany.com/page1?
• Will I need to update images links in email/landing page templates or will these automatically be updated?

If there are any other tips or red flags I should be aware of to ensure this switch is seamless, please feel free to share.

Thanks!

-Val

[Valerie_Armstro]

Sanford Whiteman​ - I did read in this doc (Add additional Landing Page CNAMEs (Administration) - Marketo Docs - Product Docs​) that cookies are not shared, but I haven't been able to find a clear solution to this issue. Have you seen any documentation on this?

[SanfordWhiteman]

cookies are not shared, but I haven't been able to find a clear solution to this issue. Have you seen any documentation on this?

I make my own documentation.

There's no "official" procedure on this. It's a shame because it is a HUGE loss of data that few people seem to comprehend until it's too late.  In fact I strongly disagree with the suggestion that you suddenly redirect everything to the new domain unless you're sure you don't care about all your associated lead activity.  Do you not have thousands+ of leads whose web activity is being tracked?