Check MX records when filling out vhost request form

[dkess]

ocfweb has a form for requesting a vhost (vhost.py), that sends an email to hostmaster@ for us to approve. We have to manually check if the domain is taken-- sometimes we forget to do this. We should check for any DNS records, including MX/CNAME records.

[jvperrin]

I believe we're already doing this in ocfweb which calls out to ocflib, which indicates that either domains are getting past this check somehow, or maybe we aren't checking for MX records?

Are we not checking on mail requests perhaps and that's where the problems here lie?

[dkess]

Oh OK it must be MX records then, since we didn't catch this in rt#8111