Just a tip for anyone experiencing similar problems. On a multisite install I had a problem where landrush created records for both the development and production domains.
vagrant landrush vms would return:
domain.comdomain.dev
Which meant I couldn’t load domain.com in my browser. Landrush includes a command to remove entries (vagrant landrush rm <host>) but that wasn’t working.
Go to /etc/resolver/ and you’ll see entries there for each domain. Delete the offending .com file.
Hope this helps.