New AD install, multiple ISP, DNS question

[derf238]

New company setup. Owner has contracted an ISP to host email and website w/registered domain name. Different ISP will provide t1/Internet access to office. If I use the company registered domain name as the AD root and set DNS server as primary for the zone (behind firewall)with forward lookup to the T1-supplying ISP's DNS server, will I have an address resolution conflict for the domain name with the email/website ISP? I would like to use the registered domain name for simplicity and because in the future we may bring the email in-house. I am using a firewall and have considered using a subdomain name as the AD root but hope it is not necessary. Also, In this scenario AD-integrated DNS or no?
Thanks in advance

 

[Stevehewitt]

1. You can use what ever DNS name you want internally. It has no bearing on external activity, in fact its often recommended for simplicity.

2. AD Integrated mode is fine.

Good Luck,


Steve.