Where do you go and configure the SOA setting for nameserver??

I can't seem to locate them in plesk. :confused:

Try looking at your zone files in /etc/named.conf, /var/named/named.ca, /var/named/named.local, etc. :)

Specifically for psa, they're located at /usr/local/plesk/namedb

Plesk should do this automatically, you shouldn't have to configure the SOA at all manually.