hopefully this may help with the trouble shooting..
Removing the digital pacific A record basically stopped browser access to the website. so I've put it back in..
... so because its on one of their VPS's the full path "25612-21212.vps.digitalpacific.com.au" in the A record is necessary. once I put it back in the website was back...
... so that leads me to think about the mail server that the full path "25612-21212.vps.digitalpacific.com.au" might be applicable to the mail configation..???