Issue Description
Clicking on a link in a Marketo e-mail that re-directs to a non-Marketo webpage destination does not open the page.
Issue Resolution
Complete the troubleshooting step below. If they do not resolve the issue, include the results in a Marketo Support Ticket.
If you are unsure you can visit CNAME lookup on mxtoolbox and enter the default branding name to check. Under the Domain field enter your default branding name.
Do you have SSL for tracking links enabled?
If you do not have SSL enabled, but when you click the link it resolves to HTTPS://,try a different network and see if it still occurs. Your network may be configured to automatically use HTTPS automatically even if the link is specified as HTTP. (Check with your network admin)
If you are re-directed to the non-Marketo landing page but the page does not load:
If you are unable to resolve the issue in the steps above, provide the test results and information in a Marketo Support Case.