A company I've been developing a web site for wants to keep their current domain, which is something like company.parentcompany.com. Because we wanted to use a different CMS, the parent company refused to support or even host it and asked us to pay for third-party hosting.
Now that we've done that, they won't make an A record for the subdomain pointing at the new server, stating that it is a security risk. I'm not a DNS expert by any means, but this sounds like total BS to me. I've seen this discussed several times, but I've never seen anyone raise security issues.
Can I fight this, or are they really correct?