incorrect combination of resource records in the zone

[jarratt]

Hi, i have a few primary domains to which i am trying to attach a few alais's when i try attach a new alais to this doman in perticular i receive the following error:
"There is incorrect combination of resource records in the zone"

This domain already has 2 other domains attached as aliases and below i have pasted the current zone file. Any ideas, i have thought of deleting all the cnames but its not really a solution as i experience this issue with a few other sites with almost no records in the zone file.

; *** This file is automatically generated by Plesk ***
$TTL 86400

@ IN SOA ns2.siworks.co.za. support.siworks.co.za. (
1175578468 ; Serial
10800 ; Refresh
3600 ; Retry
604800 ; Expire
10800 ) ; Minimum

siworks.co.za. IN NS ns2.siworks.co.za.
siworks.co.za. IN NS ns1.siworks.co.za.
pop3.siworks.co.za. IN A 196.22.139.132
smtp.siworks.co.za. IN A 196.22.139.135
imap.siworks.co.za. IN A 196.22.139.132
apollo.siworks.co.za. IN A 196.22.139.132
siworks.co.za. IN A 196.22.139.132
webmail.siworks.co.za. IN A 196.22.139.132
ns1.siworks.co.za. IN A 196.22.139.136
ns2.siworks.co.za. IN A 196.22.139.137
mail.siworks.co.za. IN A 196.22.139.132
livedb.siworks.co.za. IN A 196.22.139.132
dev.siworks.co.za. IN CNAME dyn.siworks.co.za.
dyn.siworks.co.za. IN CNAME siworks.dyndns.org
siworks.co.za. IN MX 10 mail.siworks.co.za.

 

[NightMan]

here is the answer to the problem

http://rackerhacker.com/2007/10/02/...-combination-of-resource-records-in-the-zone/

 

[sanjsantoki]

Hi,

Plesk couldn't allow to add CNAME record because it assume that mail.yourdomain.com A record is exist in the zone because MX record configured mail.yourdomain.com.

To add the CNAME for mail.yourdomain.com, you just need to delete both A and MX for mail.yourdomain.com.