I want to use the DNS services of my registrar instead of the DNS provided by my host. Here are the entries I think I will need to enter:
domain. com. NS ns1. registrardns. com.
domain. com. NS ns2. registrardns. com.
webmail. domain. com. A 000.111.222.333
domain. com. A 000.111.222.333
ftp.domain. com. CNAME domain. com.
mail. domain. com. CNAME domain. com.
www. domain. com. CNAME domain. com.
domain. com. MX 10 mail. domain. com.
000.111.222.333 PTR domain.com

Am I missing anything? Does a site hosted on an Ensim box differ from one hosted on a Plesk box?

I noticed domains on a Plesk box have the following PTR record:
000.111.222.333/24 PTR domain. com.

What's the "/24" for? Do sites hosted on Ensim or CPanel need this too?

A couple of my sites are on Plesk too. When setting up the DNS using an outside service, I only entered :

webmail. domain. com. A 000.111.222.333
domain. com. A 000.111.222.333
ftp.domain. com. CNAME domain. com.
mail. domain. com. CNAME domain. com.
www. domain. com. CNAME domain. com.
domain. com. MX 10 mail. domain. com.

I left out the PRT entry. They've been working great with no problems.

Yeah I also noticed only the sites on Plesk have that PRT entry. Never saw that on CPanel and H-Sphere. I don't know what it is.

Originally posted by kreativ
I want to use the DNS services of my registrar instead of the DNS provided by my host. Here are the entries I think I will need to enter:


....
....
mail. domain. com. CNAME domain. com.
....
....

Am I missing anything?

didn't notice anything missing but you should probably change the record for mail.domain.com from CNAME to an A
record. It'll probably work most of the time the way you have it, but MX records aren't really supposed to point to CNAMES, which your MX does the way you have it.

Does a site hosted on an Ensim box differ from one hosted on a Plesk box?

The control panel used shouldn't have much effect on the dns records, unless the control panel needs a specific record to work, like...
cpanel.domain.com. IN A 111.222.333.445

I noticed domains on a Plesk box have the following PTR record:
000.111.222.333/24 PTR domain. com.

What's the "/24" for?

the /24 is the "netmask" portion of the ip address block, in this case defining 255 addresses. (000.111.222.(0-255))
Do sites hosted on Ensim or CPanel need this too?

All you really need is:

domain.com. NS ns1.registrardns.com.
domain.com. NS ns2.registrardns.com.
domain.com. A 123.45.67.89
*.domain.com. A 123.45.67.89
domain.com. MX 10 domain.com.

That should take care of everything. You don't need the PTR record unless your provider has delegated reverse DNS authority to you, which most providers won't do, and for the few that do, you'd have to ask for it anyway, so don't worry about it. The PTR record "points" IP addresses to domain names, while A records point domain names to IP addresses.

Originally posted by ToastyX
You don't need the PTR record unless your provider has delegated reverse DNS authority to you...The PTR record "points" IP addresses to domain names, while A records point domain names to IP addresses.

What is the advantage of having PTR/reverse DNS authority as a customer? When do we need it?