it broke when we chnaged servers

Hi I am hoping that someone can help ,
when we changed servers , the connection between moodle and joomla broke . we tried changing the IP address , But its still showing errors

XMLRPC PHP Extension
Joomdlehooks User Plugin enabled
cURL Enabled
Joomla to Moodle HTTP connectivity Joomla cannot connect to Moodle
Moodle to Joomla HTTP connectivity Moodle cannot connect to Joomla
Joomdle Web Services Received empty response from Moodle

Please help! its very important that we get them connected ASAP..
Thanks
M

Each server has different configurations, so you willneed to to find the problem here.

It seems you have general connectivity problems. That suggest a firewall, or other security measures are preventing the server from connection to itself.