Starting named: /usr/sbin/named: symbol lookup error: /usr/sbin/named: undefined symbol: dns_resolver_setudpsize
If you get ”Starting named: /usr/sbin/named: symbol lookup error: /usr/sbin/named: undefined symbol: dns_resolver_setudpsize” Error while trying to start named service on cPanel Linux server then just verify entries of /etc/resolv.conf and if possible add Yahoo IP address or 61.1.96.69 and then do the following …..
yum upgrade bind-libs
And check once again by running /scripts/fixndc
Your problem has been fixed 
Regards,
Mark,
http://www.eukhost.com
Jayesh said,
September 3, 2006 @ 11:36 pm
Hello,
I have downloaded bind-libs-9.2.4-16.EL4.i386.rpm and installed.
Just wget it from any rpm site. ftp://ftp.pbone.net/mirror/www.startcom.org/AS-4.0.0/updates/i386/bind-libs-9.2.4-16.EL4.i386.rpm
rpm -Uvh bind-libs-9.2.4-16.EL4.i386.rpm
Note: But the rpm here you need to select as per your server configuration.
It’s worked for me..
Enjoy..
shane said,
September 5, 2006 @ 4:42 pm
Let me check that out, i think i would say better resolutions and solutions on only on eukhost blogs.
Marcelo Lino said,
October 31, 2006 @ 5:17 pm
Thanks Mark, your solution functioned perfect.
Rodrigo Oliveira said,
November 13, 2006 @ 7:15 pm
I had same problem and the solution functioned perfect too.
Thanks Mark !!!
Cerberox said,
December 20, 2006 @ 4:21 pm
Thank’s for the solution this works perfectly…..in Cent OS 4.1 XD…..
Web Hosting Reviews said,
December 29, 2006 @ 6:20 pm
This DNS error was due to Cpanel update in first week of september . So most of the Cpanel servers faced this issue .