I'm pointing a TLD to CMS.PageLime.com. So, instead of using a CNAME that points a subdomain (cms.mydomain.com) to the pagelime login I've configured my zone file to have the A Record @ point to the cms.pagelime.com IP Address 174.129.6.222.
This is all working fine for me at the moment. I didn't see any topics or conversations about this in the forum.
I'm wanting to make certain this configuration isn't going to cause issues in any way... now or in the future.