[CentOS] Yum showing error

[JohnsonKoilraj]

Hi
 I am using centos 5. yum saying following error..

[EMAIL PROTECTED] Desktop]# yum grouplist
Loading installonlyn plugin
Setting up Group Process
Setting up repositories
Could not retrieve mirrorlist
http://mirrorlist.centos.org/?release=5arch=i386repo=os error was
[Errno 14] HTTP Error 407: Proxy Authentication Required
Error: Cannot find a valid baseurl for repo: base

my system is behind corporate filter. Is there any where to use yum.
help me out in this. in some forum it says we need NTLM to handle
this...

by
john


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[CentOS] there is no priorities.conf file

[JohnsonKoilraj]

Hi 

I am new to Linux. I need to use YUM to install Software. But i
can't use YUM.

 when I give 
#yum install yum-priorities// following error was i encountering

 Loading installonlyn plugin
Setting up Install Process
Setting up repositories
Could not retrieve mirrorlist
http://mirrorlist.centos.org/?release=5arch=i386repo=os error was
[Errno 4] IOError: urlopen error (-2, 'Name or service not known')
Error: Cannot find a valid baseurl for repo: base

whether i need to do any thing before to use yum properly


I have attached  /etc/yum.conf and /etc/yum.repos.d/CentOS-Base.repo
files

priorities.conf file is not there in  /etc/yum/pluginconf.d/

somebody help me in this ... thank in advance


  







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contain proprietary, confidential or privileged information. If you are not the 
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Please notify the sender immediately and destroy all copies of this message and 
any attachments. 

WARNING: Computer viruses can be transmitted via email. The recipient should 
check this email and any attachments for the presence of viruses. The company 
accepts no liability for any damage caused by any virus transmitted by this 
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