correct dns configs for my domains?

[noworyz]

I am trying to figure out the best DNS configuration for all my domains. I have my main domain that I have listed as the nameservers (ns1 and ns2). Then I have say 15 other domains on the server all with the same name servers.

What I have now is (substituted domains and IP's)

MAIN DOMAIN (the one I have regsitered for the name servers)

ftp.maindomain.com.     CNAME     maindomain.com.
mail.maindomain.com.     A     xxx.xx.xxx.xxx
mail.maindomain.com.     TXT     v=spf1 a mx ~all
maindomain.com.     NS     ns1.maindomain.com.
maindomain.com.     NS     ns2.maindomain.com.
maindomain.com.     A     xxx.xx.xxx.xxx
maindomain.com.     MX (10)     mail.maindomain.com.
maindomain.com.     TXT     v=spf1 a mx ~all
ns1.maindomain.com.     A     xxx.xx.xxx.xxx
ns2.maindomain.com.     A     xxx.xx.xxx.xxx
webmail.maindomain.com.     A     xxx.xx.xxx.xxx
[url]www.maindomain.com.[/url]     CNAME     maindomain.com.

then on all my other domains I have something similar to this (obviously customized for the actual domain)

otherdomain.com.     NS     ns1.maindomain.com.
otherdomain.com.     NS     ns2.maindomain.com.
otherdomain.com.     A     xxx.xx.xxx.xxx
otherdomain.com.     MX (10)     mail.otherdomain.com.
otherdomain.com.     TXT     v=spf1 a mx ~all
ftp.otherdomain.com.     CNAME     otherdomain.com.
mail.otherdomain.com.     A     xxx.xx.xxx.xxx
mail.otherdomain.com.     TXT     v=spf1 a mx ~all
webmail.otherdomain.com.     A     xxx.xx.xxx.xxx
[url]www.otherdomain.com.[/url]     CNAME     otherdomain.com.

Is that correct or are there some settings that I have that I don't need or settings that I need that I don't have? Thanks for the help

 

[Amin Taheri]

on first glance that looks fine.

 

[tiramisu]

looks fine