DNS records needed for email server 1

[bonafide247]

I'll try and keep this cut and dry. I am a novice with Exchange, and want to see if this is the create procedure for setting up the necessary DNS records to email.

1) Register domain that you desire (ex: abc.com)

2) Set up MX and A records on your <b>Registrar's DNS servers</b>with company's external IP/email server. (ex: 24.24.24.24; mail.abc.com)

3) Set up MX and A records on company's internal DNS servers. (ex: 192.168.1.254; mail.abc.com)

On step 2, I am confused...does it have to be the registrar's DNS servers, or can it be your ISP's?

Humbly

Bonafide

 

[58sniper]

The reverse DNS record is done at the ISP. It maps your public IP address to your A record, such as mail.abc.com

The A record is done wherever your PUBLIC DNS is hosted. That's usually the same place as your website, but could be at the registrar, or elsewhere. It should the same as the reverse DNS record, such as mail.abc.com, and should point to your public IP.

The MX record then points to the A record, and is managed from the same place as the A record.

Pat Richard
Microsoft Exchange MVP

 

[bonafide247]

I want to make sure I understand correctly.

Reverse DNS = ISP
A record = Where your domain is registered
MX record = Where your domain is registered

What about your local DNS servers (on site)?

 

[58sniper]

You don't need to do anything locally unless you want to use the same address internally as externally for OWA.

So - if you use mail.abc.com/exchange to get to OWA externally, and want to use it internally, you'd have to configure split brain DNS and a related A record. Otherwise, users would need to use servername/exchange internally.

It's all in what you want.

The rest of your info is correct.

Pat Richard
Microsoft Exchange MVP