Unable To Update Blogroll

Multiple attempts to PING to update blogroll since last post results in:

Warning: fsockopen(): php_network_getaddresses: getaddrinfo failed: No address associated with hostname in /home/dcochran/webdocs/includes_live/xmlrpc.php on line 378Warning: fsockopen(): unable to connect to rpc.blogrolling.com:80 in /home/dcochran/webdocs/includes_live/xmlrpc.php on line 378Warning: Cannot modify header information - headers already sent by (output started at /home/dcochran/webdocs/includes_live/xmlrpc.php:378) in /home/dcochran/webdocs/live.blogrolling.com/ping.php on line 102

Any suggestions to overcome this will be appreciated.