RE: URGENT: DOMAIN MAPPING

RE: https://premium.wpmudev.org/forums/topic/urgent-domain-mapping#post-1163566

Do I need to add CNAME record? we have some websites hosting by a vendor, and I know they are using Domain Mapping from your company also, I never add CNMAE everytime I launching new sub-site...

I added A record and point to the dedicated IP from our new server from HostGator, this is work when the sub-site is still single site, I cannot add the domain to the multisite..
Do I need to give you the admin account to check? please help...

Sorry for my poor Eng..

Eric