correct dns?

ok i wrote a post a few days ago asking how u list name servers in your zone files for your domain. So to my understanding, in every zone file for everydomain, u have to have a NS record which points the name server to ur domain, and a A record which points your name server to an ip???

these are my three zone files, could u just let me know if the way the name servers are addressed in each one are correct. Thanx

// thedigitaldream.co.uk.hosts
$ttl 38400
thedigitaldream.co.uk. IN SOA srv1.thedigitaldream.co.uk. admin.thedigitaldream.co.uk. (
2002181101
4000
3600
604800
38400 )
thedigitaldream.co.uk. IN NS srv1.thedigitaldream.co.uk.
thedigitaldream.co.uk. IN A 81.97.225.82
srv1.thedigitaldream.co.uk. IN A 81.97.225.82
www IN A 81.97.225.82
mail IN A 81.97.225.82
profile IN A 81.97.225.82
thedigitaldream.co.uk. IN MX 10 mail.thedigitaldream.co.uk.

//crystalphase.com
$ttl 38400
crystalphase.com. IN SOA srv1.thedigitaldream.co.uk. admin.crystalphase.com. (
2002181101
4000
3600
604800
38400 )
crystalphase.com. IN NS srv1.thedigitaldream.co.uk.
crystalphase.com. IN A 81.97.225.82
srv1.thedigitaldream.co.uk. IN A 81.97.225.82
www IN A 81.97.225.82
mail IN A 81.97.225.82
profile IN A 81.97.225.82
crystalphase.com. IN MX 10 mail.crystalphase.com.


// tranceforums.com
$ttl 38400
tranceforums.com. IN SOA srv1.thedigitaldream.co.uk. admin.tranceforums.com. (
2002181101
4000
3600
604800
38400 )
tranceforums. IN NS srv1.thedigitaldream.co.uk.
tranceforums.com. IN A 81.97.225.82
srv1.thedigitaldream.co.uk. IN A 81.97.225.82
www IN A 81.97.225.82
mail IN A 81.97.225.82
profile IN A 81.97.225.82
tranceforums.com. IN MX 10 mail.tranceforums.com.


also, im not sure if my mx records are correct

is it correct to point mail.thedigitaldream.co.uk to my ip 81.97.225.82 as an A record

and then

mail.thedigitaldream.co.uk to my domain thedigitaldream.co.uk as a MX record???

thanx

 

 

 

 

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