We are setting up a landing page in Marketo: http://info.onvia.com/BobIsMyPage.html I wanted the above Marketo landing page to appear under a pathname on Onvia.com through using a symlink - So if you type in the following URL www.onvia.com/analytics the Marketo landing page would appear In order to do this, I would need to create the subdomain info.onvia.com. Will this mess up my other landing pages under the info.onvia.com?

Your question is kind of confusing because if you want www.example.com/pathname to display the content of info.example.com/page.html, there's no reason to point info.example.com anywhere other than Marketo. In fact, if you changed it, it would never work, since www needs to read from Mkto!It sounds like what you want is a simple proxy ("symlink" has no relevance here). A capable sysadmin could set this up instantly.