So, I googled around and couldn't find anything that really related, so I thought I'd ask. I have a client who needs me to setup an account as they're moving from their old host. They host their email in-house and under any normal circumstance, I'd just change the DNS zone to reflect that on their account BUT they are using dyndns.com for their DNS. So, simple question, if they want to continue to use dyndns.com and not transfer DNS control to me, can I just setup an account like normal and just point their A record from dnydns.com to the IP of the server they'll be on? Any more settings I should be concerned about (internal mail routing, etc...)