We recently set up a branded domain as per the instructions from Marketo's product docs. http://docs.marketo.com/display/public/DOCS/Configure+Protocols+for+Marketo
IT set-up the new CNAME in the DNS record and pointed our new CNAME marketo.armor.com to our tracking link mkto-sjl0027.com
After we changed our Branding Domain in the admin panel to marketo.armor.com all of our email links broke. We simply get a site can't be reached error on any email links.
I know that a DNS update can take 72 hours in some cases but we've checked and it's propagated fully by now.
Any thoughts or help would be greatly appreciated as we are trying to get this resolved as fast as possible.